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authorLudovic Courtès <ludo@gnu.org>2017-05-03 23:03:20 +0200
committerLudovic Courtès <ludo@gnu.org>2017-05-03 23:50:15 +0200
commitcd903ef7871170d3c4eced45418459d293ef48a7 (patch)
tree1a3bc718ba57704583a63595732220f31f5c0cf0 /gnu/packages.scm
parent1dc0a66591f4fb37fc0df2aec6d3b0b7e2046c70 (diff)
downloadgnu-guix-cd903ef7871170d3c4eced45418459d293ef48a7.tar
gnu-guix-cd903ef7871170d3c4eced45418459d293ef48a7.tar.gz
Add (guix discovery).
* guix/discovery.scm, tests/discovery.scm: New files. * gnu/packages.scm (scheme-files, file-name->module-name) (scheme-modules, all-package-modules): Remove. (fold-packages): Rewrite in terms of 'fold-module-public-variables'. * gnu/tests.scm: Use (guix discovery). * Makefile.am (MODULES): Add guix/discovery.scm. (SCM_TESTS): Add tests/discovery.scm.
Diffstat (limited to 'gnu/packages.scm')
-rw-r--r--gnu/packages.scm93
1 files changed, 8 insertions, 85 deletions
diff --git a/gnu/packages.scm b/gnu/packages.scm
index 08f1340612..57907155fb 100644
--- a/gnu/packages.scm
+++ b/gnu/packages.scm
@@ -24,12 +24,11 @@
#:use-module (guix packages)
#:use-module (guix ui)
#:use-module (guix utils)
+ #:use-module (guix discovery)
#:use-module (guix memoization)
- #:use-module (guix combinators)
#:use-module ((guix build utils)
#:select ((package-name->name+version
. hyphen-separated-name->name+version)))
- #:use-module (ice-9 ftw)
#:use-module (ice-9 vlist)
#:use-module (ice-9 match)
#:use-module (srfi srfi-1)
@@ -48,7 +47,6 @@
%package-module-path
fold-packages
- scheme-modules ;XXX: for lack of a better place
find-packages-by-name
find-best-packages-by-name
@@ -140,92 +138,17 @@ for system '~a'")
directory))
%load-path)))
-(define* (scheme-files directory)
- "Return the list of Scheme files found under DIRECTORY, recursively. The
-returned list is sorted in alphabetical order."
-
- ;; Sort entries so that 'fold-packages' works in a deterministic fashion
- ;; regardless of details of the underlying file system.
- (sort (file-system-fold (const #t) ; enter?
- (lambda (path stat result) ; leaf
- (if (string-suffix? ".scm" path)
- (cons path result)
- result))
- (lambda (path stat result) ; down
- result)
- (lambda (path stat result) ; up
- result)
- (const #f) ; skip
- (lambda (path stat errno result)
- (warning (G_ "cannot access `~a': ~a~%")
- path (strerror errno))
- result)
- '()
- directory
- stat)
- string<?))
-
-(define file-name->module-name
- (let ((not-slash (char-set-complement (char-set #\/))))
- (lambda (file)
- "Return the module name (a list of symbols) corresponding to FILE."
- (map string->symbol
- (string-tokenize (string-drop-right file 4) not-slash)))))
-
-(define* (scheme-modules directory #:optional sub-directory)
- "Return the list of Scheme modules available under DIRECTORY.
-Optionally, narrow the search to SUB-DIRECTORY."
- (define prefix-len
- (string-length directory))
-
- (filter-map (lambda (file)
- (let* ((file (substring file prefix-len))
- (module (file-name->module-name file)))
- (catch #t
- (lambda ()
- (resolve-interface module))
- (lambda args
- ;; Report the error, but keep going.
- (warn-about-load-error module args)
- #f))))
- (scheme-files (if sub-directory
- (string-append directory "/" sub-directory)
- directory))))
-
-(define* (all-package-modules #:optional (path (%package-module-path)))
- "Return the list of package modules found in PATH, a list of directories to
-search."
- (fold-right (lambda (spec result)
- (match spec
- ((? string? directory)
- (append (scheme-modules directory) result))
- ((directory . sub-directory)
- (append (scheme-modules directory sub-directory)
- result))))
- '()
- path))
-
(define (fold-packages proc init)
"Call (PROC PACKAGE RESULT) for each available package, using INIT as
the initial value of RESULT. It is guaranteed to never traverse the
same package twice."
- (identity ; discard second return value
- (fold2 (lambda (module result seen)
- (fold2 (lambda (var result seen)
- (if (and (package? var)
- (not (vhash-assq var seen))
- (not (hidden-package? var)))
- (values (proc var result)
- (vhash-consq var #t seen))
- (values result seen)))
- result
- seen
- (module-map (lambda (sym var)
- (false-if-exception (variable-ref var)))
- module)))
- init
- vlist-null
- (all-package-modules))))
+ (fold-module-public-variables (lambda (object result)
+ (if (and (package? object)
+ (not (hidden-package? object)))
+ (proc object result)
+ result))
+ init
+ (all-modules (%package-module-path))))
(define find-packages-by-name
(let ((packages (delay