Switch to Guile-Gcrypt.

This removes (guix hash) and (guix pk-crypto), which now live as part of
Guile-Gcrypt (version 0.1.0.)

* guix/gcrypt.scm, guix/hash.scm, guix/pk-crypto.scm,
tests/hash.scm, tests/pk-crypto.scm: Remove.
* configure.ac: Test for Guile-Gcrypt.  Remove LIBGCRYPT and
LIBGCRYPT_LIBDIR assignments.
* m4/guix.m4 (GUIX_ASSERT_LIBGCRYPT_USABLE): Remove.
* README: Add Guile-Gcrypt to the dependencies; move libgcrypt as
"required unless --disable-daemon".
* doc/guix.texi (Requirements): Likewise.
* gnu/packages/bash.scm, guix/derivations.scm, guix/docker.scm,
guix/git.scm, guix/http-client.scm, guix/import/cpan.scm,
guix/import/cran.scm, guix/import/crate.scm, guix/import/elpa.scm,
guix/import/gnu.scm, guix/import/hackage.scm,
guix/import/texlive.scm, guix/import/utils.scm, guix/nar.scm,
guix/pki.scm, guix/scripts/archive.scm,
guix/scripts/authenticate.scm, guix/scripts/download.scm,
guix/scripts/hash.scm, guix/scripts/pack.scm,
guix/scripts/publish.scm, guix/scripts/refresh.scm,
guix/scripts/substitute.scm, guix/store.scm,
guix/store/deduplication.scm, guix/tests.scm, tests/base32.scm,
tests/builders.scm, tests/challenge.scm, tests/cpan.scm,
tests/crate.scm, tests/derivations.scm, tests/gem.scm,
tests/nar.scm, tests/opam.scm, tests/pki.scm,
tests/publish.scm, tests/pypi.scm, tests/store-deduplication.scm,
tests/store.scm, tests/substitute.scm: Adjust imports.
* gnu/system/vm.scm: Likewise.
(guile-sqlite3&co): Rename to...
(gcrypt-sqlite3&co): ... this.  Add GUILE-GCRYPT.
(expression->derivation-in-linux-vm)[config]: Remove.
(iso9660-image)[config]: Remove.
(qemu-image)[config]: Remove.
(system-docker-image)[config]: Remove.
* guix/scripts/pack.scm: Adjust imports.
(guile-sqlite3&co): Rename to...
(gcrypt-sqlite3&co): ... this.  Add GUILE-GCRYPT.
(self-contained-tarball)[build]: Call 'make-config.scm' without
 #:libgcrypt argument.
(squashfs-image)[libgcrypt]: Remove.
[build]: Call 'make-config.scm' without #:libgcrypt.
(docker-image)[config, json]: Remove.
[build]: Add GUILE-GCRYPT to the extensions  Remove (guix config) from
the imported modules.
* guix/self.scm (specification->package): Remove "libgcrypt", add
"guile-gcrypt".
(compiled-guix): Remove #:libgcrypt.
[guile-gcrypt]: New variable.
[dependencies]: Add it.
[*core-modules*]: Remove #:libgcrypt from 'make-config.scm' call.
Add #:extensions.
[*config*]: Remove #:libgcrypt from 'make-config.scm' call.
(%dependency-variables): Remove %libgcrypt.
(make-config.scm): Remove #:libgcrypt.
* build-aux/build-self.scm (guile-gcrypt): New variable.
(make-config.scm): Remove #:libgcrypt.
(build-program)[fake-gcrypt-hash]: New variable.
Add (gcrypt hash) to the imported modules.  Adjust load path
assignments.
* gnu/packages/package-management.scm (guix)[propagated-inputs]: Add
GUILE-GCRYPT.
[arguments]: In 'wrap-program' phase, add GUILE-GCRYPT to the search
path.

29 files changed, 56 insertions, 728 deletions

diff --git a/guix/derivations.scm b/guix/derivations.scm
index da686e89e2..7afecb10cc 100644
--- a/guix/derivations.scm
+++ b/guix/derivations.scm
@@ -35,7 +35,7 @@
   #:use-module (guix memoization)
   #:use-module (guix combinators)
   #:use-module (guix monads)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix base32)
   #:use-module (guix records)
   #:use-module (guix sets)
diff --git a/guix/docker.scm b/guix/docker.scm
index b869901599..0757d3356f 100644
--- a/guix/docker.scm
+++ b/guix/docker.scm
@@ -19,7 +19,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (guix docker)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix base16)
   #:use-module ((guix build utils)
                 #:select (mkdir-p
diff --git a/guix/gcrypt.scm b/guix/gcrypt.scm
deleted file mode 100644
index 1517501751..0000000000
--- a/guix/gcrypt.scm
+++ /dev/null
@@ -1,49 +0,0 @@
-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014, 2015 Ludovic Courtès <ludo@gnu.org>
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (guix gcrypt)
-  #:use-module (guix config)
-  #:use-module (system foreign)
-  #:export (gcrypt-version
-            libgcrypt-func))
-
-;;; Commentary:
-;;;
-;;; Common code for the GNU Libgcrypt bindings.  Loading this module
-;;; initializes Libgcrypt as a side effect.
-;;;
-;;; Code:
-
-(define libgcrypt-func
-  (let ((lib (dynamic-link %libgcrypt)))
-    (lambda (func)
-      "Return a pointer to symbol FUNC in libgcrypt."
-      (dynamic-func func lib))))
-
-(define gcrypt-version
-  ;; According to the manual, this function must be called before any other,
-  ;; and it's not clear whether it can be called more than once.  So call it
-  ;; right here from the top level.
-  (let* ((ptr     (libgcrypt-func "gcry_check_version"))
-         (proc    (pointer->procedure '* ptr '(*)))
-         (version (pointer->string (proc %null-pointer))))
-    (lambda ()
-      "Return the version number of libgcrypt as a string."
-      version)))
-
-;;; gcrypt.scm ends here
diff --git a/guix/git.scm b/guix/git.scm
index 193e2df111..c577eba5ee 100644
--- a/guix/git.scm
+++ b/guix/git.scm
@@ -21,7 +21,7 @@
   #:use-module (git)
   #:use-module (git object)
   #:use-module (guix base32)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module ((guix build utils) #:select (mkdir-p))
   #:use-module (guix store)
   #:use-module (guix utils)
diff --git a/guix/hash.scm b/guix/hash.scm
deleted file mode 100644
index 8d7ba21425..0000000000
--- a/guix/hash.scm
+++ /dev/null
@@ -1,184 +0,0 @@
-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2018 Ludovic Courtès <ludo@gnu.org>
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (guix hash)
-  #:use-module (guix gcrypt)
-  #:use-module (rnrs bytevectors)
-  #:use-module (ice-9 binary-ports)
-  #:use-module (system foreign)
-  #:use-module ((guix build utils) #:select (dump-port))
-  #:use-module (srfi srfi-11)
-  #:use-module (srfi srfi-26)
-  #:export (sha1
-            sha256
-            open-sha256-port
-            port-sha256
-            file-sha256
-            open-sha256-input-port))
-
-;;; Commentary:
-;;;
-;;; Cryptographic hashes.
-;;;
-;;; Code:
-
-
-;;;
-;;; Hash.
-;;;
-
-(define-syntax GCRY_MD_SHA256
-  ;; Value as of Libgcrypt 1.5.2.
-  (identifier-syntax 8))
-
-(define-syntax GCRY_MD_SHA1
-  (identifier-syntax 2))
-
-(define bytevector-hash
-  (let ((hash (pointer->procedure void
-                                  (libgcrypt-func "gcry_md_hash_buffer")
-                                  `(,int * * ,size_t))))
-    (lambda (bv type size)
-      "Return the hash TYPE, of SIZE bytes, of BV as a bytevector."
-      (let ((digest (make-bytevector size)))
-        (hash type (bytevector->pointer digest)
-              (bytevector->pointer bv) (bytevector-length bv))
-        digest))))
-
-(define sha1
-  (cut bytevector-hash <> GCRY_MD_SHA1 20))
-
-(define sha256
-  (cut bytevector-hash <> GCRY_MD_SHA256 (/ 256 8)))
-
-(define open-sha256-md
-  (let ((open (pointer->procedure int
-                                  (libgcrypt-func "gcry_md_open")
-                                  `(* ,int ,unsigned-int))))
-    (lambda ()
-      (let* ((md  (bytevector->pointer (make-bytevector (sizeof '*))))
-             (err (open md GCRY_MD_SHA256 0)))
-        (if (zero? err)
-            (dereference-pointer md)
-            (throw 'gcrypt-error err))))))
-
-(define md-write
-  (pointer->procedure void
-                      (libgcrypt-func "gcry_md_write")
-                      `(* * ,size_t)))
-
-(define md-read
-  (pointer->procedure '*
-                      (libgcrypt-func "gcry_md_read")
-                      `(* ,int)))
-
-(define md-close
-  (pointer->procedure void
-                      (libgcrypt-func "gcry_md_close")
-                      '(*)))
-
-
-(define (open-sha256-port)
-  "Return two values: an output port, and a thunk.  When the thunk is called,
-it returns the SHA256 hash (a bytevector) of all the data written to the
-output port."
-  (define sha256-md
-    (open-sha256-md))
-
-  (define digest #f)
-  (define position 0)
-
-  (define (finalize!)
-    (let ((ptr (md-read sha256-md 0)))
-      (set! digest (bytevector-copy (pointer->bytevector ptr 32)))
-      (md-close sha256-md)))
-
-  (define (write! bv offset len)
-    (if (zero? len)
-        (begin
-          (finalize!)
-          0)
-        (let ((ptr (bytevector->pointer bv offset)))
-          (md-write sha256-md ptr len)
-          (set! position (+ position len))
-          len)))
-
-  (define (get-position)
-    position)
-
-  (define (close)
-    (unless digest
-      (finalize!)))
-
-  (values (make-custom-binary-output-port "sha256"
-                                          write! get-position #f
-                                          close)
-          (lambda ()
-            (unless digest
-              (finalize!))
-            digest)))
-
-(define (port-sha256 port)
-  "Return the SHA256 hash (a bytevector) of all the data drained from PORT."
-  (let-values (((out get)
-                (open-sha256-port)))
-    (dump-port port out)
-    (close-port out)
-    (get)))
-
-(define (file-sha256 file)
-  "Return the SHA256 hash (a bytevector) of FILE."
-  (call-with-input-file file port-sha256))
-
-(define (open-sha256-input-port port)
-  "Return an input port that wraps PORT and a thunk to get the hash of all the
-data read from PORT.  The thunk always returns the same value."
-  (define md
-    (open-sha256-md))
-
-  (define (read! bv start count)
-    (let ((n (get-bytevector-n! port bv start count)))
-      (if (eof-object? n)
-          0
-          (begin
-            (unless digest
-              (let ((ptr (bytevector->pointer bv start)))
-                (md-write md ptr n)))
-            n))))
-
-  (define digest #f)
-
-  (define (finalize!)
-    (let ((ptr (md-read md 0)))
-      (set! digest (bytevector-copy (pointer->bytevector ptr 32)))
-      (md-close md)))
-
-  (define (get-hash)
-    (unless digest
-      (finalize!))
-    digest)
-
-  (define (unbuffered port)
-    ;; Guile <= 2.0.9 does not support 'setvbuf' on custom binary input ports.
-    (setvbuf port _IONBF)
-    port)
-
-  (values (unbuffered (make-custom-binary-input-port "sha256" read! #f #f #f))
-          get-hash))
-
-;;; hash.scm ends here
diff --git a/guix/http-client.scm b/guix/http-client.scm
index 3b34d4ffba..07360e6108 100644
--- a/guix/http-client.scm
+++ b/guix/http-client.scm
@@ -34,7 +34,7 @@
   #:use-module (guix ui)
   #:use-module (guix utils)
   #:use-module (guix base64)
-  #:autoload   (guix hash) (sha256)
+  #:autoload   (gcrypt hash) (sha256)
   #:use-module ((guix build utils)
                 #:select (mkdir-p dump-port))
   #:use-module ((guix build download)
diff --git a/guix/import/cpan.scm b/guix/import/cpan.scm
index d0ff64ed05..d4bea84353 100644
--- a/guix/import/cpan.scm
+++ b/guix/import/cpan.scm
@@ -27,7 +27,7 @@
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-26)
   #:use-module (json)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix store)
   #:use-module (guix utils)
   #:use-module (guix base32)
diff --git a/guix/import/cran.scm b/guix/import/cran.scm
index a5203fe78d..89c84f7037 100644
--- a/guix/import/cran.scm
+++ b/guix/import/cran.scm
@@ -29,7 +29,7 @@
   #:use-module (web uri)
   #:use-module (guix memoization)
   #:use-module (guix http-client)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix store)
   #:use-module (guix base32)
   #:use-module ((guix download) #:select (download-to-store))
diff --git a/guix/import/crate.scm b/guix/import/crate.scm
index 3724a457a4..e0b400d054 100644
--- a/guix/import/crate.scm
+++ b/guix/import/crate.scm
@@ -20,7 +20,7 @@
   #:use-module (guix base32)
   #:use-module (guix build-system cargo)
   #:use-module ((guix download) #:prefix download:)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix http-client)
   #:use-module (guix import json)
   #:use-module (guix import utils)
diff --git a/guix/import/elpa.scm b/guix/import/elpa.scm
index c37afaf8e6..83354d3f04 100644
--- a/guix/import/elpa.scm
+++ b/guix/import/elpa.scm
@@ -32,7 +32,7 @@
   #:use-module (guix http-client)
   #:use-module (guix store)
   #:use-module (guix ui)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix base32)
   #:use-module (guix upstream)
   #:use-module (guix packages)
diff --git a/guix/import/gnu.scm b/guix/import/gnu.scm
index bbb17047f0..29324d7554 100644
--- a/guix/import/gnu.scm
+++ b/guix/import/gnu.scm
@@ -21,7 +21,7 @@
   #:use-module (guix import utils)
   #:use-module (guix utils)
   #:use-module (guix store)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix base32)
   #:use-module (guix upstream)
   #:use-module (srfi srfi-1)
diff --git a/guix/import/hackage.scm b/guix/import/hackage.scm
index 54301de2e8..766a0b53f1 100644
--- a/guix/import/hackage.scm
+++ b/guix/import/hackage.scm
@@ -33,7 +33,7 @@
   #:use-module ((guix import utils) #:select (factorize-uri recursive-import))
   #:use-module (guix import cabal)
   #:use-module (guix store)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix base32)
   #:use-module (guix memoization)
   #:use-module (guix upstream)
diff --git a/guix/import/texlive.scm b/guix/import/texlive.scm
index d4c3714364..791b514485 100644
--- a/guix/import/texlive.scm
+++ b/guix/import/texlive.scm
@@ -26,7 +26,7 @@
   #:use-module (srfi srfi-34)
   #:use-module (web uri)
   #:use-module (guix http-client)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix memoization)
   #:use-module (guix store)
   #:use-module (guix base32)
diff --git a/guix/import/utils.scm b/guix/import/utils.scm
index 0dc8fd5857..516c0cfaa2 100644
--- a/guix/import/utils.scm
+++ b/guix/import/utils.scm
@@ -23,7 +23,7 @@
 (define-module (guix import utils)
   #:use-module (guix base32)
   #:use-module ((guix build download) #:prefix build:)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix http-client)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix utils)
diff --git a/guix/nar.scm b/guix/nar.scm
index 3556de1379..0495b4a40c 100644
--- a/guix/nar.scm
+++ b/guix/nar.scm
@@ -25,9 +25,9 @@
   #:use-module (guix store)
   #:use-module (guix store database)
   #:use-module (guix ui)                          ; for '_'
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix pki)
-  #:use-module (guix pk-crypto)
+  #:use-module (gcrypt pk-crypto)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-11)
   #:use-module (srfi srfi-26)
diff --git a/guix/pk-crypto.scm b/guix/pk-crypto.scm
deleted file mode 100644
index 55ba7b1bb8..0000000000
--- a/guix/pk-crypto.scm
+++ /dev/null
@@ -1,407 +0,0 @@
-;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2013, 2014, 2015, 2017 Ludovic Courtès <ludo@gnu.org>
-;;;
-;;; This file is part of GNU Guix.
-;;;
-;;; GNU Guix is free software; you can redistribute it and/or modify it
-;;; under the terms of the GNU General Public License as published by
-;;; the Free Software Foundation; either version 3 of the License, or (at
-;;; your option) any later version.
-;;;
-;;; GNU Guix is distributed in the hope that it will be useful, but
-;;; WITHOUT ANY WARRANTY; without even the implied warranty of
-;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;;; GNU General Public License for more details.
-;;;
-;;; You should have received a copy of the GNU General Public License
-;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
-
-(define-module (guix pk-crypto)
-  #:use-module (guix base16)
-  #:use-module (guix gcrypt)
-
-  #:use-module (system foreign)
-  #:use-module (rnrs bytevectors)
-  #:use-module (ice-9 match)
-  #:use-module (ice-9 rdelim)
-  #:export (canonical-sexp?
-            error-source
-            error-string
-            string->canonical-sexp
-            canonical-sexp->string
-            read-file-sexp
-            number->canonical-sexp
-            canonical-sexp-car
-            canonical-sexp-cdr
-            canonical-sexp-nth
-            canonical-sexp-nth-data
-            canonical-sexp-length
-            canonical-sexp-null?
-            canonical-sexp-list?
-            bytevector->hash-data
-            hash-data->bytevector
-            key-type
-            sign
-            verify
-            generate-key
-            find-sexp-token
-            canonical-sexp->sexp
-            sexp->canonical-sexp)
-  #:re-export (gcrypt-version))
-
-
-;;; Commentary:
-;;;
-;;; Public key cryptographic routines from GNU Libgcrypt.
-;;;;
-;;; Libgcrypt uses "canonical s-expressions" to represent key material,
-;;; parameters, and data.  We keep it as an opaque object to map them to
-;;; Scheme s-expressions because (1) Libgcrypt sexps may be stored in secure
-;;; memory, and (2) the read syntax is different.
-;;;
-;;; A 'canonical-sexp->sexp' procedure is provided nevertheless, for use in
-;;; cases where it is safe to move data out of Libgcrypt---e.g., when
-;;; processing ACL entries, public keys, etc.
-;;;
-;;; Canonical sexps were defined by Rivest et al. in the IETF draft at
-;;; <http://people.csail.mit.edu/rivest/Sexp.txt> for the purposes of SPKI
-;;; (see <http://www.ietf.org/rfc/rfc2693.txt>.)
-;;;
-;;; Code:
-
-;; Libgcrypt "s-expressions".
-(define-wrapped-pointer-type <canonical-sexp>
-  canonical-sexp?
-  naked-pointer->canonical-sexp
-  canonical-sexp->pointer
-  (lambda (obj port)
-    ;; Don't print OBJ's external representation: we don't want key material
-    ;; to leak in backtraces and such.
-    (format port "#<canonical-sexp ~a | ~a>"
-            (number->string (object-address obj) 16)
-            (number->string (pointer-address (canonical-sexp->pointer obj))
-                            16))))
-
-(define finalize-canonical-sexp!
-  (libgcrypt-func "gcry_sexp_release"))
-
-(define-inlinable (pointer->canonical-sexp ptr)
-  "Return a <canonical-sexp> that wraps PTR."
-  (let* ((sexp (naked-pointer->canonical-sexp ptr))
-         (ptr* (canonical-sexp->pointer sexp)))
-    ;; Did we already have a <canonical-sexp> object for PTR?
-    (when (equal? ptr ptr*)
-      ;; No, so we can safely add a finalizer (in Guile 2.0.9
-      ;; 'set-pointer-finalizer!' *adds* a finalizer rather than replacing the
-      ;; existing one.)
-      (set-pointer-finalizer! ptr finalize-canonical-sexp!))
-    sexp))
-
-(define error-source
-  (let* ((ptr  (libgcrypt-func "gcry_strsource"))
-         (proc (pointer->procedure '* ptr (list int))))
-    (lambda (err)
-      "Return the error source (a string) for ERR, an error code as thrown
-along with 'gcry-error'."
-      (pointer->string (proc err)))))
-
-(define error-string
-  (let* ((ptr  (libgcrypt-func "gcry_strerror"))
-         (proc (pointer->procedure '* ptr (list int))))
-    (lambda (err)
-      "Return the error description (a string) for ERR, an error code as
-thrown along with 'gcry-error'."
-      (pointer->string (proc err)))))
-
-(define string->canonical-sexp
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_new"))
-         (proc (pointer->procedure int ptr `(* * ,size_t ,int))))
-    (lambda (str)
-      "Parse STR and return the corresponding gcrypt s-expression."
-
-      ;; When STR comes from 'canonical-sexp->string', it may contain
-      ;; characters that are really meant to be interpreted as bytes as in a C
-      ;; 'char *'.  Thus, convert STR to ISO-8859-1 so the byte values of the
-      ;; characters are preserved.
-      (let* ((sexp (bytevector->pointer (make-bytevector (sizeof '*))))
-             (err  (proc sexp (string->pointer str "ISO-8859-1") 0 1)))
-        (if (= 0 err)
-            (pointer->canonical-sexp (dereference-pointer sexp))
-            (throw 'gcry-error 'string->canonical-sexp err))))))
-
-(define-syntax GCRYSEXP_FMT_ADVANCED
-  (identifier-syntax 3))
-
-(define canonical-sexp->string
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_sprint"))
-         (proc (pointer->procedure size_t ptr `(* ,int * ,size_t))))
-    (lambda (sexp)
-      "Return a textual representation of SEXP."
-      (let loop ((len 1024))
-        (let* ((buf  (bytevector->pointer (make-bytevector len)))
-               (size (proc (canonical-sexp->pointer sexp)
-                           GCRYSEXP_FMT_ADVANCED buf len)))
-          (if (zero? size)
-              (loop (* len 2))
-              (pointer->string buf size "ISO-8859-1")))))))
-
-(define (read-file-sexp file)
-  "Return the canonical sexp read from FILE."
-  (call-with-input-file file
-    (compose string->canonical-sexp
-             read-string)))
-
-(define canonical-sexp-car
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_car"))
-         (proc (pointer->procedure '* ptr '(*))))
-    (lambda (lst)
-      "Return the first element of LST, an sexp, if that element is a list;
-return #f if LST or its first element is not a list (this is different from
-the usual Lisp 'car'.)"
-      (let ((result (proc (canonical-sexp->pointer lst))))
-        (if (null-pointer? result)
-            #f
-            (pointer->canonical-sexp result))))))
-
-(define canonical-sexp-cdr
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_cdr"))
-         (proc (pointer->procedure '* ptr '(*))))
-    (lambda (lst)
-      "Return the tail of LST, an sexp, or #f if LST is not a list."
-      (let ((result (proc (canonical-sexp->pointer lst))))
-        (if (null-pointer? result)
-            #f
-            (pointer->canonical-sexp result))))))
-
-(define canonical-sexp-nth
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_nth"))
-         (proc (pointer->procedure '* ptr `(* ,int))))
-    (lambda (lst index)
-      "Return the INDEXth nested element of LST, an s-expression.  Return #f
-if that element does not exist, or if it's an atom.  (Note: this is obviously
-different from Scheme's 'list-ref'.)"
-      (let ((result (proc (canonical-sexp->pointer lst) index)))
-        (if (null-pointer? result)
-            #f
-            (pointer->canonical-sexp result))))))
-
-(define (dereference-size_t p)
-  "Return the size_t value pointed to by P."
-  (bytevector-uint-ref (pointer->bytevector p (sizeof size_t))
-                       0 (native-endianness)
-                       (sizeof size_t)))
-
-(define canonical-sexp-length
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_length"))
-         (proc (pointer->procedure int ptr '(*))))
-    (lambda (sexp)
-      "Return the length of SEXP if it's a list (including the empty list);
-return zero if SEXP is an atom."
-      (proc (canonical-sexp->pointer sexp)))))
-
-(define token-string?
-  (let ((token-cs (char-set-union char-set:digit
-                                  char-set:letter
-                                  (char-set #\- #\. #\/ #\_
-                                            #\: #\* #\+ #\=))))
-    (lambda (str)
-      "Return #t if STR is a token as per Section 4.3 of
-<http://people.csail.mit.edu/rivest/Sexp.txt>."
-      (and (not (string-null? str))
-           (string-every token-cs str)
-           (not (char-set-contains? char-set:digit (string-ref str 0)))))))
-
-(define canonical-sexp-nth-data
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_nth_data"))
-         (proc (pointer->procedure '* ptr `(* ,int *))))
-    (lambda (lst index)
-      "Return as a symbol (for \"sexp tokens\") or a bytevector (for any other
-\"octet string\") the INDEXth data element (atom) of LST, an s-expression.
-Return #f if that element does not exist, or if it's a list."
-      (let* ((size*  (bytevector->pointer (make-bytevector (sizeof '*))))
-             (result (proc (canonical-sexp->pointer lst) index size*)))
-        (if (null-pointer? result)
-            #f
-            (let* ((len (dereference-size_t size*))
-                   (str (pointer->string result len "ISO-8859-1")))
-              ;; The sexp spec speaks of "tokens" and "octet strings".
-              ;; Sometimes these octet strings are actual strings (text),
-              ;; sometimes they're bytevectors, and sometimes they're
-              ;; multi-precision integers (MPIs).  Only the application knows.
-              ;; However, for convenience, we return a symbol when a token is
-              ;; encountered since tokens are frequent (at least in the 'car'
-              ;; of each sexp.)
-              (if (token-string? str)
-                  (string->symbol str)   ; an sexp "token"
-                  (bytevector-copy       ; application data, textual or binary
-                   (pointer->bytevector result len)))))))))
-
-(define (number->canonical-sexp number)
-  "Return an s-expression representing NUMBER."
-  (string->canonical-sexp (string-append "#" (number->string number 16) "#")))
-
-(define* (bytevector->hash-data bv
-                                #:optional
-                                (hash-algo "sha256")
-                                #:key (key-type 'ecc))
-  "Given BV, a bytevector containing a hash of type HASH-ALGO, return an
-s-expression suitable for use as the 'data' argument for 'sign'.  KEY-TYPE
-must be a symbol: 'dsa, 'ecc, or 'rsa."
-  (string->canonical-sexp
-   (format #f "(data (flags ~a) (hash \"~a\" #~a#))"
-           (case key-type
-             ((ecc dsa) "rfc6979")
-             ((rsa)     "pkcs1")
-             (else (error "unknown key type" key-type)))
-           hash-algo
-           (bytevector->base16-string bv))))
-
-(define (key-type sexp)
-  "Return a symbol denoting the type of public or private key represented by
-SEXP--e.g., 'rsa', 'ecc'--or #f if SEXP does not denote a valid key."
-  (case (canonical-sexp-nth-data sexp 0)
-    ((public-key private-key)
-     (canonical-sexp-nth-data (canonical-sexp-nth sexp 1) 0))
-    (else #f)))
-
-(define* (hash-data->bytevector data)
-  "Return two values: the hash value (a bytevector), and the hash algorithm (a
-string) extracted from DATA, an sexp as returned by 'bytevector->hash-data'.
-Return #f if DATA does not conform."
-  (let ((hash (find-sexp-token data 'hash)))
-    (if hash
-        (let ((algo  (canonical-sexp-nth-data hash 1))
-              (value (canonical-sexp-nth-data hash 2)))
-          (values value (symbol->string algo)))
-        (values #f #f))))
-
-(define sign
-  (let* ((ptr  (libgcrypt-func "gcry_pk_sign"))
-         (proc (pointer->procedure int ptr '(* * *))))
-    (lambda (data secret-key)
-      "Sign DATA, a canonical s-expression representing a suitable hash, with
-SECRET-KEY (a canonical s-expression whose car is 'private-key'.)  Note that
-DATA must be a 'data' s-expression, as returned by
-'bytevector->hash-data' (info \"(gcrypt) Cryptographic Functions\")."
-      (let* ((sig (bytevector->pointer (make-bytevector (sizeof '*))))
-             (err (proc sig (canonical-sexp->pointer data)
-                        (canonical-sexp->pointer secret-key))))
-        (if (= 0 err)
-            (pointer->canonical-sexp (dereference-pointer sig))
-            (throw 'gcry-error 'sign err))))))
-
-(define verify
-  (let* ((ptr  (libgcrypt-func "gcry_pk_verify"))
-         (proc (pointer->procedure int ptr '(* * *))))
-    (lambda (signature data public-key)
-      "Verify that SIGNATURE is a signature of DATA with PUBLIC-KEY, all of
-which are gcrypt s-expressions."
-      (zero? (proc (canonical-sexp->pointer signature)
-                   (canonical-sexp->pointer data)
-                   (canonical-sexp->pointer public-key))))))
-
-(define generate-key
-  (let* ((ptr  (libgcrypt-func "gcry_pk_genkey"))
-         (proc (pointer->procedure int ptr '(* *))))
-    (lambda (params)
-      "Return as an s-expression a new key pair for PARAMS.  PARAMS must be an
-s-expression like: (genkey (rsa (nbits 4:2048)))."
-      (let* ((key (bytevector->pointer (make-bytevector (sizeof '*))))
-             (err (proc key (canonical-sexp->pointer params))))
-        (if (zero? err)
-            (pointer->canonical-sexp (dereference-pointer key))
-            (throw 'gcry-error 'generate-key err))))))
-
-(define find-sexp-token
-  (let* ((ptr  (libgcrypt-func "gcry_sexp_find_token"))
-         (proc (pointer->procedure '* ptr `(* * ,size_t))))
-    (lambda (sexp token)
-      "Find in SEXP the first element whose 'car' is TOKEN and return it;
-return #f if not found."
-      (let* ((token (string->pointer (symbol->string token)))
-             (res   (proc (canonical-sexp->pointer sexp) token 0)))
-        (if (null-pointer? res)
-            #f
-            (pointer->canonical-sexp res))))))
-
-(define-inlinable (canonical-sexp-null? sexp)
-  "Return #t if SEXP is the empty-list sexp."
-  (null-pointer? (canonical-sexp->pointer sexp)))
-
-(define (canonical-sexp-list? sexp)
-  "Return #t if SEXP is a list."
-  (or (canonical-sexp-null? sexp)
-      (> (canonical-sexp-length sexp) 0)))
-
-(define (canonical-sexp-fold proc seed sexp)
-  "Fold PROC (as per SRFI-1) over SEXP, a canonical sexp."
-  (if (canonical-sexp-list? sexp)
-      (let ((len (canonical-sexp-length sexp)))
-        (let loop ((index  0)
-                   (result seed))
-          (if (= index len)
-              result
-              (loop (+ 1 index)
-                    ;; XXX: Call 'nth-data' *before* 'nth' to work around
-                    ;; <https://bugs.g10code.com/gnupg/issue1594>, which
-                    ;; affects 1.6.0 and earlier versions.
-                    (proc (or (canonical-sexp-nth-data sexp index)
-                              (canonical-sexp-nth sexp index))
-                          result)))))
-      (error "sexp is not a list" sexp)))
-
-(define (canonical-sexp->sexp sexp)
-  "Return a Scheme sexp corresponding to SEXP.  This is particularly useful to
-compare sexps (since Libgcrypt does not provide an 'equal?' procedure), or to
-use pattern matching."
-  (if (canonical-sexp-list? sexp)
-      (reverse
-       (canonical-sexp-fold (lambda (item result)
-                              (cons (if (canonical-sexp? item)
-                                        (canonical-sexp->sexp item)
-                                        item)
-                                    result))
-                            '()
-                            sexp))
-
-      ;; As of Libgcrypt 1.6.0, there's no function to extract the buffer of a
-      ;; non-list sexp (!), so we first enlist SEXP, then get at its buffer.
-      (let ((sexp (string->canonical-sexp
-                   (string-append "(" (canonical-sexp->string sexp)
-                                  ")"))))
-        (or (canonical-sexp-nth-data sexp 0)
-            (canonical-sexp-nth sexp 0)))))
-
-(define (sexp->canonical-sexp sexp)
-  "Return a canonical sexp equivalent to SEXP, a Scheme sexp as returned by
-'canonical-sexp->sexp'."
-  ;; XXX: This is inefficient, but the Libgcrypt API doesn't allow us to do
-  ;; much better.
-  (string->canonical-sexp
-    (call-with-output-string
-     (lambda (port)
-       (define (write item)
-         (cond ((list? item)
-                (display "(" port)
-                (for-each write item)
-                (display ")" port))
-               ((symbol? item)
-                (format port " ~a" item))
-               ((bytevector? item)
-                (format port " #~a#"
-                        (bytevector->base16-string item)))
-               (else
-                (error "unsupported sexp item type" item))))
-
-       (write sexp)))))
-
-(define (gcrypt-error-printer port key args default-printer)
-  "Print the gcrypt error specified by ARGS."
-  (match args
-    ((proc err)
-     (format port "In procedure ~a: ~a: ~a"
-             proc (error-source err) (error-string err)))))
-
-(set-exception-printer! 'gcry-error gcrypt-error-printer)
-
-;;; pk-crypto.scm ends here
diff --git a/guix/pki.scm b/guix/pki.scm
index 1551425c33..6326e065e9 100644
--- a/guix/pki.scm
+++ b/guix/pki.scm
@@ -18,7 +18,7 @@
 
 (define-module (guix pki)
   #:use-module (guix config)
-  #:use-module (guix pk-crypto)
+  #:use-module (gcrypt pk-crypto)
   #:use-module ((guix utils) #:select (with-atomic-file-output))
   #:use-module ((guix build utils) #:select (mkdir-p))
   #:use-module (ice-9 match)
diff --git a/guix/scripts/archive.scm b/guix/scripts/archive.scm
index a359f405fe..fb2f61ce30 100644
--- a/guix/scripts/archive.scm
+++ b/guix/scripts/archive.scm
@@ -29,7 +29,7 @@
   #:use-module (guix monads)
   #:use-module (guix ui)
   #:use-module (guix pki)
-  #:use-module (guix pk-crypto)
+  #:use-module (gcrypt pk-crypto)
   #:use-module (guix scripts)
   #:use-module (guix scripts build)
   #:use-module (gnu packages)
diff --git a/guix/scripts/authenticate.scm b/guix/scripts/authenticate.scm
index 8b19dc871b..f1fd8ee895 100644
--- a/guix/scripts/authenticate.scm
+++ b/guix/scripts/authenticate.scm
@@ -19,7 +19,7 @@
 (define-module (guix scripts authenticate)
   #:use-module (guix config)
   #:use-module (guix base16)
-  #:use-module (guix pk-crypto)
+  #:use-module (gcrypt pk-crypto)
   #:use-module (guix pki)
   #:use-module (guix ui)
   #:use-module (ice-9 binary-ports)
diff --git a/guix/scripts/download.scm b/guix/scripts/download.scm
index 1b99bc62cf..b9162d3449 100644
--- a/guix/scripts/download.scm
+++ b/guix/scripts/download.scm
@@ -20,7 +20,7 @@
   #:use-module (guix ui)
   #:use-module (guix scripts)
   #:use-module (guix store)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix base16)
   #:use-module (guix base32)
   #:use-module ((guix download) #:hide (url-fetch))
diff --git a/guix/scripts/hash.scm b/guix/scripts/hash.scm
index cae5d6bcdf..2bd2ac4a06 100644
--- a/guix/scripts/hash.scm
+++ b/guix/scripts/hash.scm
@@ -20,7 +20,7 @@
 
 (define-module (guix scripts hash)
   #:use-module (guix base32)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix serialization)
   #:use-module (guix ui)
   #:use-module (guix scripts)
@@ -44,7 +44,7 @@
   `((format . ,bytevector->nix-base32-string)))
 
 (define (show-help)
-  (display (G_ "Usage: guix hash [OPTION] FILE
+  (display (G_ "Usage: gcrypt hash [OPTION] FILE
 Return the cryptographic hash of FILE.
 
 Supported formats: 'nix-base32' (default), 'base32', and 'base16' ('hex'
@@ -93,7 +93,7 @@ and 'hexadecimal' can be used as well).\n"))
                   (exit 0)))
         (option '(#\V "version") #f #f
                 (lambda args
-                  (show-version-and-exit "guix hash")))))
+                  (show-version-and-exit "gcrypt hash")))))
 
 
 
diff --git a/guix/scripts/pack.scm b/guix/scripts/pack.scm
index fb0677de28..1916f3b9d7 100644
--- a/guix/scripts/pack.scm
+++ b/guix/scripts/pack.scm
@@ -41,7 +41,7 @@
   #:use-module (gnu packages guile)
   #:use-module (gnu packages base)
   #:autoload   (gnu packages package-management) (guix)
-  #:autoload   (gnu packages gnupg) (libgcrypt)
+  #:autoload   (gnu packages gnupg) (guile-gcrypt)
   #:autoload   (gnu packages guile) (guile2.0-json guile-json)
   #:use-module (srfi srfi-1)
   #:use-module (srfi srfi-9)
@@ -95,10 +95,12 @@ found."
     (('gnu _ ...) #t)
     (_ #f)))
 
-(define guile-sqlite3&co
-  ;; Guile-SQLite3 and its propagated inputs.
-  (cons guile-sqlite3
-        (package-transitive-propagated-inputs guile-sqlite3)))
+(define gcrypt-sqlite3&co
+  ;; Guile-Gcrypt, Guile-SQLite3, and their propagated inputs.
+  (append-map (lambda (package)
+                (cons package
+                      (package-transitive-propagated-inputs package)))
+              (list guile-gcrypt guile-sqlite3)))
 
 (define* (self-contained-tarball name profile
                                  #:key target
@@ -124,16 +126,14 @@ added to the pack."
                                   "guix/store/schema.sql"))))
 
   (define build
-    (with-imported-modules `(((guix config)
-                              => ,(make-config.scm
-                                   #:libgcrypt libgcrypt))
+    (with-imported-modules `(((guix config) => ,(make-config.scm))
                              ,@(source-module-closure
                                 `((guix build utils)
                                   (guix build union)
                                   (guix build store-copy)
                                   (gnu build install))
                                 #:select? not-config?))
-      (with-extensions guile-sqlite3&co
+      (with-extensions gcrypt-sqlite3&co
         #~(begin
             (use-modules (guix build utils)
                          ((guix build union) #:select (relative-file-name))
@@ -251,22 +251,14 @@ points for virtual file systems (like procfs), and optional symlinks.
 
 SYMLINKS must be a list of (SOURCE -> TARGET) tuples denoting symlinks to be
 added to the pack."
-  (define libgcrypt
-    ;; XXX: Not strictly needed, but pulled by (guix store database).
-    (module-ref (resolve-interface '(gnu packages gnupg))
-                'libgcrypt))
-
-
   (define build
-    (with-imported-modules `(((guix config)
-                              => ,(make-config.scm
-                                   #:libgcrypt libgcrypt))
+    (with-imported-modules `(((guix config) => ,(make-config.scm))
                              ,@(source-module-closure
                                 '((guix build utils)
                                   (guix build store-copy)
                                   (gnu build install))
                                 #:select? not-config?))
-      (with-extensions guile-sqlite3&co
+      (with-extensions gcrypt-sqlite3&co
         #~(begin
             (use-modules (guix build utils)
                          (gnu build install)
@@ -349,32 +341,12 @@ must a be a GNU triplet and it is used to derive the architecture metadata in
 the image."
   (define defmod 'define-module)                  ;trick Geiser
 
-  (define config
-    ;; (guix config) module for consumption by (guix gcrypt).
-    (scheme-file "gcrypt-config.scm"
-                 #~(begin
-                     (#$defmod (guix config)
-                       #:export (%libgcrypt))
-
-                     ;; XXX: Work around <http://bugs.gnu.org/15602>.
-                     (eval-when (expand load eval)
-                       (define %libgcrypt
-                         #+(file-append libgcrypt "/lib/libgcrypt"))))))
-
-  (define json
-    ;; Pick the guile-json package that corresponds to the Guile used to build
-    ;; derivations.
-    (if (string-prefix? "2.0" (package-version (default-guile)))
-        guile2.0-json
-        guile-json))
-
   (define build
-    ;; Guile-JSON is required by (guix docker).
-    (with-extensions (list json)
-      (with-imported-modules `(,@(source-module-closure '((guix docker)
-                                                          (guix build store-copy))
-                                                        #:select? not-config?)
-                               ((guix config) => ,config))
+    ;; Guile-JSON and Guile-Gcrypt are required by (guix docker).
+    (with-extensions (list guile-json guile-gcrypt)
+      (with-imported-modules (source-module-closure '((guix docker)
+                                                      (guix build store-copy))
+                                                    #:select? not-config?)
         #~(begin
             (use-modules (guix docker) (srfi srfi-19) (guix build store-copy))
 
diff --git a/guix/scripts/publish.scm b/guix/scripts/publish.scm
index b5dfdab32f..c5326b33da 100644
--- a/guix/scripts/publish.scm
+++ b/guix/scripts/publish.scm
@@ -44,9 +44,9 @@
   #:use-module (guix base64)
   #:use-module (guix config)
   #:use-module (guix derivations)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix pki)
-  #:use-module (guix pk-crypto)
+  #:use-module (gcrypt pk-crypto)
   #:use-module (guix workers)
   #:use-module (guix store)
   #:use-module ((guix serialization) #:select (write-file))
diff --git a/guix/scripts/refresh.scm b/guix/scripts/refresh.scm
index a8fe993e33..bcc23bd39c 100644
--- a/guix/scripts/refresh.scm
+++ b/guix/scripts/refresh.scm
@@ -23,7 +23,7 @@
 
 (define-module (guix scripts refresh)
   #:use-module (guix ui)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix scripts)
   #:use-module (guix store)
   #:use-module (guix utils)
diff --git a/guix/scripts/substitute.scm b/guix/scripts/substitute.scm
index 7634bb37f6..cd300195d8 100755
--- a/guix/scripts/substitute.scm
+++ b/guix/scripts/substitute.scm
@@ -26,11 +26,11 @@
   #:use-module (guix config)
   #:use-module (guix records)
   #:use-module ((guix serialization) #:select (restore-file))
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix base32)
   #:use-module (guix base64)
   #:use-module (guix cache)
-  #:use-module (guix pk-crypto)
+  #:use-module (gcrypt pk-crypto)
   #:use-module (guix pki)
   #:use-module ((guix build utils) #:select (mkdir-p dump-port))
   #:use-module ((guix build download)
diff --git a/guix/self.scm b/guix/self.scm
index 81f9b0cfd5..126116e08a 100644
--- a/guix/self.scm
+++ b/guix/self.scm
@@ -83,8 +83,8 @@ GUILE-VERSION (\"2.0\" or \"2.2\"), or #f if none of the packages matches."
       ("guile-ssh"  (ref '(gnu packages ssh)   'guile-ssh))
       ("guile-git"  (ref '(gnu packages guile) 'guile-git))
       ("guile-sqlite3" (ref '(gnu packages guile) 'guile-sqlite3))
+      ("guile-gcrypt"  (ref '(gnu packages gnupg) 'guile-gcrypt))
       ("gnutls"     (ref '(gnu packages tls) 'gnutls))
-      ("libgcrypt"  (ref '(gnu packages gnupg) 'libgcrypt))
       ("zlib"       (ref '(gnu packages compression) 'zlib))
       ("gzip"       (ref '(gnu packages compression) 'gzip))
       ("bzip2"      (ref '(gnu packages compression) 'bzip2))
@@ -454,7 +454,6 @@ assumed to be part of MODULES."
                         (name (string-append "guix-" version))
                         (guile-version (effective-version))
                         (guile-for-build (guile-for-build guile-version))
-                        (libgcrypt (specification->package "libgcrypt"))
                         (zlib (specification->package "zlib"))
                         (gzip (specification->package "gzip"))
                         (bzip2 (specification->package "bzip2"))
@@ -481,6 +480,10 @@ assumed to be part of MODULES."
                        "guile-sqlite3"
                        "guile2.0-sqlite3"))
 
+  (define guile-gcrypt
+    (package-for-guile guile-version
+                       "guile-gcrypt"))
+
   (define gnutls
     (package-for-guile guile-version
                        "gnutls" "guile2.0-gnutls"))
@@ -489,7 +492,7 @@ assumed to be part of MODULES."
     (match (append-map (lambda (package)
                          (cons (list "x" package)
                                (package-transitive-propagated-inputs package)))
-                       (list gnutls guile-git guile-json
+                       (list guile-gcrypt gnutls guile-git guile-json
                              guile-ssh guile-sqlite3))
       (((labels packages _ ...) ...)
        packages)))
@@ -513,10 +516,7 @@ assumed to be part of MODULES."
                  ;; rebuilt when the version changes, which in turn means we
                  ;; can have substitutes for it.
                  #:extra-modules
-                 `(((guix config)
-                    => ,(make-config.scm #:libgcrypt
-                                         (specification->package
-                                          "libgcrypt"))))
+                 `(((guix config) => ,(make-config.scm)))
 
                  ;; (guix man-db) is needed at build-time by (guix profiles)
                  ;; but we don't need to compile it; not compiling it allows
@@ -526,6 +526,7 @@ assumed to be part of MODULES."
                    ("guix/store/schema.sql"
                     ,(local-file "../guix/store/schema.sql")))
 
+                 #:extensions (list guile-gcrypt)
                  #:guile-for-build guile-for-build))
 
   (define *extra-modules*
@@ -600,8 +601,7 @@ assumed to be part of MODULES."
                  '()
                  #:extra-modules
                  `(((guix config)
-                    => ,(make-config.scm #:libgcrypt libgcrypt
-                                         #:zlib zlib
+                    => ,(make-config.scm #:zlib zlib
                                          #:gzip gzip
                                          #:bzip2 bzip2
                                          #:xz xz
@@ -684,7 +684,7 @@ assumed to be part of MODULES."
 
 (define %dependency-variables
   ;; (guix config) variables corresponding to dependencies.
-  '(%libgcrypt %libz %xz %gzip %bzip2))
+  '(%libz %xz %gzip %bzip2))
 
 (define %persona-variables
   ;; (guix config) variables that define Guix's persona.
@@ -703,7 +703,7 @@ assumed to be part of MODULES."
                                       (variables rest ...))))))
     (variables %localstatedir %storedir %sysconfdir %system)))
 
-(define* (make-config.scm #:key libgcrypt zlib gzip xz bzip2
+(define* (make-config.scm #:key zlib gzip xz bzip2
                           (package-name "GNU Guix")
                           (package-version "0")
                           (bug-report-address "bug-guix@gnu.org")
@@ -723,7 +723,6 @@ assumed to be part of MODULES."
                                %state-directory
                                %store-database-directory
                                %config-directory
-                               %libgcrypt
                                %libz
                                %gzip
                                %bzip2
@@ -766,9 +765,6 @@ assumed to be part of MODULES."
                    (define %xz
                      #+(and xz (file-append xz "/bin/xz")))
 
-                   (define %libgcrypt
-                     #+(and libgcrypt
-                            (file-append libgcrypt "/lib/libgcrypt")))
                    (define %libz
                      #+(and zlib
                             (file-append zlib "/lib/libz"))))
diff --git a/guix/store.scm b/guix/store.scm
index f41a1e2690..af7f6980cf 100644
--- a/guix/store.scm
+++ b/guix/store.scm
@@ -25,7 +25,7 @@
   #:use-module (guix monads)
   #:use-module (guix base16)
   #:use-module (guix base32)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix profiling)
   #:autoload   (guix build syscalls) (terminal-columns)
   #:use-module (rnrs bytevectors)
diff --git a/guix/store/deduplication.scm b/guix/store/deduplication.scm
index 8c19d7309e..53810c680f 100644
--- a/guix/store/deduplication.scm
+++ b/guix/store/deduplication.scm
@@ -21,7 +21,7 @@
 ;;; timestamps, deduplicating, etc.
 
 (define-module (guix store deduplication)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix build utils)
   #:use-module (guix base16)
   #:use-module (srfi srfi-11)
diff --git a/guix/tests.scm b/guix/tests.scm
index 34e3e0fc2a..06e9f8da0b 100644
--- a/guix/tests.scm
+++ b/guix/tests.scm
@@ -22,7 +22,7 @@
   #:use-module (guix packages)
   #:use-module (guix base32)
   #:use-module (guix serialization)
-  #:use-module (guix hash)
+  #:use-module (gcrypt hash)
   #:use-module (guix build-system gnu)
   #:use-module (gnu packages bootstrap)
   #:use-module (srfi srfi-34)