build-system: Rewrite using gexps.

* guix/packages.scm (expand-input): Remove 'store', 'system', and
  'cross-system' parameters; add #:native?.  Rewrite to return
  name/gexp-input tuples.
  (bag->derivation): Adjust accordingly.  Lower (bag-build bag).
  (bag->cross-derivation): Ditto.  Instead of #:native-drvs and
  #:target-drvs, pass #:build-inputs, #:host-inputs, and #:target-inputs.
  (%derivation-cache): Remove.
* gnu/packages/bootstrap.scm (raw-build): Turn into a monadic procedure.
* gnu/packages/commencement.scm (glibc-final)[arguments]: Use
  'gexp-input' for the #:allowed-references argument.
* guix/build-system/cmake.scm (cmake-build): Remove 'store' parameter.
  Switch to the use of gexps and 'gexp->derivation'.
  (lower): Remove #:source from 'private-keywords'.
* guix/build-system/glib-or-gtk.scm (glib-or-gtk-build, lower):
  Likewise.
* guix/build-system/font.scm (font-build): Likewise.
* guix/build-system/gnu.scm (gnu-build): Likewise, and remove
  'canonicalize-reference'.
  (gnu-cross-build): Likewise, and expect #:build-inputs, #:host-inputs,
  and #:target-inputs instead of #:native-drvs and #:target-drvs.
  (lower): Likewise.
* guix/build-system/perl.scm (perl-build, lower): Likewise.
* guix/build-system/python.scm (python-build, lower): Likewise.
* guix/build-system/ruby.scm (ruby-build, lower): Likewise.
* guix/build-system/waf.scm (waf-build, lower): Likewise.
* guix/build-system/trivial.scm (guile-for-build): Remove.
  (trivial-build): Remove 'store' parameter, change to gexps.
  (trivial-cross-build): Ditto, and change to #:build-inputs & co.
* guix/build-system/cargo.scm (cargo-build): Change to 'gexp->derivation'.
* guix/build-system/copy.scm (copy-build): Likewise.
* guix/build-system/dune.scm (dune-build): Likewise.
* guix/build-system/guile.scm (guile-build, guile-cross-build):
  Likewise.
* guix/build-system/meson.scm (meson-build): Likewise.
* guix/build-system/ocaml.scm (ocaml-build): Likewise.
* guix/build-system/scons.scm (scons-build): Likewise.
* guix/build-system/texlive.scm (texlive-build): Likewise.
* guix/build-system/android-ndk.scm (android-ndk-build): Likewise.
* guix/build-system/ant.scm (ant-build): Likewise.
* guix/build-system/asdf.scm (asdf-build/source, asdf-build): Likewise.
* guix/build-system/chicken.scm (chicken-build): Likewise.
* guix/build-system/clojure.scm (clojure-build): Likewise.
(source->output-path, maybe-guile->guile): Remove.
* guix/build-system/dub.scm (dub-build): Likewise.
* guix/build-system/emacs.scm (emacs-build): Likewise.
* guix/build-system/go.scm (go-build): Likewise.
* guix/build-system/haskell.scm (haskell-build): Likewise.
* guix/build-system/julia.scm (julia-build): Likewise.
* guix/build-system/linux-module.scm (linux-module-build)
(linux-module-build-cross): Likewise.
* guix/build-system/maven.scm (maven-build): Likewise.
* guix/build-system/minify.scm (minify-build): Likewise.
* guix/build-system/node.scm (node-build): Likewise.
* guix/build-system/qt.scm (qt-build, qt-cross-build): Likewise.
* guix/build-system/r.scm (r-build): Likewise.
* guix/build-system/rakudo.scm (rakudo-build): Likewise.
* guix/build-system/renpy.scm (renpy-build): Likewise.
* tests/builders.scm ("gnu-build"): Call 'store-lower' on 'gnu-build'.
  Pass #:source parameter.
* tests/packages.scm ("search paths"): Use 'abort-to-prompt' instead of
  a normal return from the 'build' method.
  ("package->bag, sensitivity to %current-target-system"): Change 'build'
  to match the new build system signature.

squash! build-system: Rewrite using gexps.

squash! build-system: Rewrite using gexps.

1 files changed, 38 insertions, 50 deletions

diff --git a/guix/build-system/renpy.scm b/guix/build-system/renpy.scm
index 35edc0056d..5c65f55455 100644
--- a/guix/build-system/renpy.scm
+++ b/guix/build-system/renpy.scm
@@ -1,5 +1,6 @@
 ;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2021 Leo Prikler <leo.prikler@student.tugraz.at>
+;;; Copyright © 2021 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -21,7 +22,8 @@
   #:use-module (guix utils)
   #:use-module (guix memoization)
   #:use-module (guix packages)
-  #:use-module (guix derivations)
+  #:use-module (guix gexp)
+  #:use-module (guix monads)
   #:use-module (guix search-paths)
   #:use-module (guix build-system)
   #:use-module (guix build-system gnu)
@@ -53,7 +55,7 @@
                 #:rest arguments)
   "Return a bag for NAME."
   (define private-keywords
-    '(#:source #:target #:renpy #:inputs #:native-inputs))
+    '(#:target #:renpy #:inputs #:native-inputs))
 
   (and (not target)                               ;XXX: no cross-compilation
        (bag
@@ -72,57 +74,43 @@
          (build renpy-build)
          (arguments (strip-keyword-arguments private-keywords arguments)))))
 
-(define* (renpy-build store name inputs
-                       #:key
-                       (phases '(@ (guix build renpy-build-system)
-                                   %standard-phases))
-                       (configure-flags ''())
-                       (outputs '("out"))
-                       (output "out")
-                       (game "game")
-                       (search-paths '())
-                       (system (%current-system))
-                       (guile #f)
-                       (imported-modules %renpy-build-system-modules)
-                       (modules '((guix build renpy-build-system)
-                                  (guix build utils))))
+(define* (renpy-build name inputs
+                      #:key
+                      source
+                      (phases '(@ (guix build renpy-build-system)
+                                  %standard-phases))
+                      (configure-flags ''())
+                      (outputs '("out"))
+                      (output "out")
+                      (game "game")
+                      (search-paths '())
+                      (system (%current-system))
+                      (guile #f)
+                      (imported-modules %renpy-build-system-modules)
+                      (modules '((guix build renpy-build-system)
+                                 (guix build utils))))
   "Build SOURCE using RENPY, and with INPUTS."
   (define builder
-    `(begin
-       (use-modules ,@modules)
-       (renpy-build #:name ,name
-                    #:source ,(match (assoc-ref inputs "source")
-                                (((? derivation? source))
-                                 (derivation->output-path source))
-                                ((source)
-                                 source)
-                                (source
-                                 source))
-                     #:configure-flags ,configure-flags
-                     #:system ,system
-                     #:phases ,phases
-                     #:outputs %outputs
-                     #:output ,output
-                     #:game ,game
-                     #:search-paths ',(map search-path-specification->sexp
-                                           search-paths)
-                     #:inputs %build-inputs)))
+    (with-imported-modules imported-modules
+      #~(begin
+          (use-modules #$@modules)
+          (renpy-build #:name #$name
+                       #:source #+source
+                       #:configure-flags #$configure-flags
+                       #:system #$system
+                       #:phases #$phases
+                       #:outputs #$(outputs->gexp outputs)
+                       #:output #$output
+                       #:game #$game
+                       #:search-paths '#$(map search-path-specification->sexp
+                                              search-paths)
+                       #:inputs #$(input-tuples->gexp inputs)))))
 
-  (define guile-for-build
-    (match guile
-      ((? package?)
-       (package-derivation store guile system #:graft? #f))
-      (#f                                         ; the default
-       (let* ((distro (resolve-interface '(gnu packages commencement)))
-              (guile  (module-ref distro 'guile-final)))
-         (package-derivation store guile system #:graft? #f)))))
-
-  (build-expression->derivation store name builder
-                                #:inputs inputs
-                                #:system system
-                                #:modules imported-modules
-                                #:outputs outputs
-                                #:guile-for-build guile-for-build))
+  (mlet %store-monad ((guile (package->derivation (or guile (default-guile))
+                                                  system #:graft? #f)))
+    (gexp->derivation name builder
+                      #:system system
+                      #:guile-for-build guile)))
 
 (define renpy-build-system
   (build-system