guix: Add maven-build-system.

* guix/build-system/maven.scm: New file.
* guix/build/maven-build-system.scm: New file.
* Makefile.am (MODULES): Add them.
* doc/guix.texi (Build Systems): Document the maven build system.

1 files changed, 214 insertions, 0 deletions

diff --git a/guix/build-system/maven.scm b/guix/build-system/maven.scm
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2020 Julien Lepiller <julien@lepiller.eu>
+;;;
+;;; 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 build-system maven)
+  #:use-module (guix store)
+  #:use-module (guix utils)
+  #:use-module (guix derivations)
+  #:use-module (guix search-paths)
+  #:use-module (guix build-system)
+  #:use-module (guix build-system gnu)
+  #:use-module (guix packages)
+  #:use-module (ice-9 match)
+  #:use-module (srfi srfi-1)
+  #:export (%maven-build-system-modules
+            default-maven
+            %default-maven-plugins
+            %default-exclude
+            lower
+            maven-build
+            maven-build-system))
+
+;; Commentary:
+;;
+;; Standard build procedure for Maven packages.  This is implemented as an
+;; extension of `gnu-build-system'.
+;;
+;; Code:
+
+(define %maven-build-system-modules
+  ;; Build-side modules imported by default.
+  `((guix build maven-build-system)
+    (guix build maven pom)
+    ,@%gnu-build-system-modules))
+
+(define (default-maven)
+  "Return the default maven package."
+
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages maven))))
+    (module-ref module 'maven)))
+
+(define (default-maven-compiler-plugin)
+  "Return the default maven compiler plugin package."
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages maven))))
+    (module-ref module 'maven-compiler-plugin)))
+
+(define (default-maven-jar-plugin)
+  "Return the default maven jar plugin package."
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages maven))))
+    (module-ref module 'maven-jar-plugin)))
+
+(define (default-maven-resources-plugin)
+  "Return the default maven resources plugin package."
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages maven))))
+    (module-ref module 'maven-resources-plugin)))
+
+(define (default-maven-surefire-plugin)
+  "Return the default maven surefire plugin package."
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages maven))))
+    (module-ref module 'maven-surefire-plugin)))
+
+(define (default-java-surefire-junit4)
+  "Return the default surefire junit4 provider package."
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages maven))))
+    (module-ref module 'java-surefire-junit4)))
+
+(define (default-maven-install-plugin)
+  "Return the default maven install plugin package."
+  ;; Do not use `@' to avoid introducing circular dependencies.
+  (let ((module (resolve-interface '(gnu packages maven))))
+    (module-ref module 'maven-install-plugin)))
+
+(define (default-jdk)
+  "Return the default JDK package."
+  ;; Lazily resolve the binding to avoid a circular dependency.
+  (let ((jdk-mod (resolve-interface '(gnu packages java))))
+    (module-ref jdk-mod 'icedtea)))
+
+(define %default-maven-plugins
+  `(("maven-compiler-plugin" ,(default-maven-compiler-plugin))
+    ("maven-jar-plugin" ,(default-maven-jar-plugin))
+    ("maven-resources-plugin" ,(default-maven-resources-plugin))
+    ("maven-surefire-plugin" ,(default-maven-surefire-plugin))
+    ("java-surefire-junit4" ,(default-java-surefire-junit4))
+    ("maven-install-plugin" ,(default-maven-install-plugin))))
+
+(define %default-exclude
+  `(("org.apache.maven.plugins" .
+      ("maven-release-plugin" "maven-site-plugin"))))
+
+(define* (lower name
+                #:key source inputs native-inputs outputs system target
+                (maven (default-maven))
+                (jdk (default-jdk))
+                (maven-plugins %default-maven-plugins)
+                (local-packages '())
+                (exclude %default-exclude)
+                #:allow-other-keys
+                #:rest arguments)
+  "Return a bag for NAME."
+  (define private-keywords
+    '(#:source #:target #:jdk #:maven #:maven-plugins #:inputs #:native-inputs))
+
+  (and (not target)                               ;XXX: no cross-compilation
+       (bag
+         (name name)
+         (system system)
+         (host-inputs `(,@(if source
+                              `(("source" ,source))
+                              '())
+                        ,@inputs
+
+                        ;; Keep the standard inputs of 'gnu-build-system'.
+                        ,@(standard-packages)))
+         (build-inputs `(("maven" ,maven)
+                         ("jdk" ,jdk "jdk")
+                         ,@maven-plugins
+                         ,@native-inputs))
+         (outputs outputs)
+         (build maven-build)
+         (arguments (strip-keyword-arguments private-keywords arguments)))))
+
+(define* (maven-build store name inputs
+                       #:key (guile #f)
+                       (outputs '("out"))
+                       (search-paths '())
+                       (out-of-source? #t)
+                       (validate-runpath? #t)
+                       (patch-shebangs? #t)
+                       (strip-binaries? #t)
+                       (exclude %default-exclude)
+                       (local-packages '())
+                       (tests? #t)
+                       (strip-flags ''("--strip-debug"))
+                       (strip-directories ''("lib" "lib64" "libexec"
+                                             "bin" "sbin"))
+                       (phases '(@ (guix build maven-build-system)
+                                   %standard-phases))
+                       (system (%current-system))
+                       (imported-modules %maven-build-system-modules)
+                       (modules '((guix build maven-build-system)
+                                  (guix build maven pom)
+                                  (guix build utils))))
+  "Build SOURCE using PATCHELF, and with INPUTS. This assumes that SOURCE
+provides its own binaries."
+  (define builder
+    `(begin
+       (use-modules ,@modules)
+       (maven-build #:source ,(match (assoc-ref inputs "source")
+                                 (((? derivation? source))
+                                  (derivation->output-path source))
+                                 ((source)
+                                  source)
+                                 (source
+                                  source))
+                     #:system ,system
+                     #:outputs %outputs
+                     #:inputs %build-inputs
+                     #:search-paths ',(map search-path-specification->sexp
+                                           search-paths)
+                     #:phases ,phases
+                     #:exclude (quote ,exclude)
+                     #:local-packages (quote ,local-packages)
+                     #:tests? ,tests?
+                     #:out-of-source? ,out-of-source?
+                     #:validate-runpath? ,validate-runpath?
+                     #:patch-shebangs? ,patch-shebangs?
+                     #:strip-binaries? ,strip-binaries?
+                     #:strip-flags ,strip-flags
+                     #:strip-directories ,strip-directories)))
+
+  (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
+                                #:system system
+                                #:inputs inputs
+                                #:modules imported-modules
+                                #:outputs outputs
+                                #:guile-for-build guile-for-build))
+
+(define maven-build-system
+  (build-system
+    (name 'maven)
+    (description "The standard Maven build system")
+    (lower lower)))
+
+;;; maven.scm ends here