gnu: Add rdmd.

* gnu/packages/ldc.scm (rdmd): New variable.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu/packages/ldc.scm

 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2015 Roel Janssen <roel@gnu.org>
+;;; Copyright © 2015, 2016 Roel Janssen <roel@gnu.org>
 ;;; Copyright © 2015 Pjotr Prins <pjotr.guix@thebird.nl>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -21,6 +21,8 @@ (define-module (gnu packages ldc)
   #:use-module ((guix licenses) #:prefix license:)
   #:use-module (guix packages)
   #:use-module (guix download)
+  #:use-module (guix git-download)
+  #:use-module (guix build-system gnu)
   #:use-module (guix build-system cmake)
   #:use-module (gnu packages)
   #:use-module (gnu packages base)
@@ -29,6 +31,47 @@ (define-module (gnu packages ldc)
   #:use-module (gnu packages textutils)
   #:use-module (gnu packages zip))
 
+(define-public rdmd
+  (let ((commit "da0a2e0a379b08294015eec9d531f1e5dd4226f0"))
+    (package
+      (name "rdmd")
+      (version (string-append "v2.070.0-1." (string-take commit 7)))
+      (source (origin
+        (method git-fetch)
+        (uri (git-reference
+              (url "https://github.com/D-Programming-Language/tools.git")
+              (commit commit)))
+        (file-name (string-append name "-" version "-checkout"))
+        (sha256
+         (base32
+          "1pcx5lyqzrip86f4vv60x292rpvnwsq2hvl1znm9x9rn68f34m45"))))
+      (build-system gnu-build-system)
+      (arguments
+       '(#:phases
+         (modify-phases %standard-phases
+           (delete 'configure)
+           (delete 'check) ; There is no Makefile, so there's no 'make check'.
+           (replace
+            'build
+            (lambda _
+              (zero? (system* "ldc2" "rdmd.d"))))
+           (replace
+            'install
+            (lambda* (#:key outputs #:allow-other-keys)
+              (let ((bin (string-append (assoc-ref outputs "out") "/bin")))
+                (install-file "rdmd" bin)))))))
+      (native-inputs
+       `(("ldc" ,ldc)))
+      (home-page "https://github.com/D-Programming-Language/tools/")
+      (synopsis "Specialized equivalent to 'make' for the D language")
+      (description
+       "rdmd is a companion to the dmd compiler that simplifies the typical
+edit-compile-link-run or edit-make-run cycle to a rapid edit-run cycle.  Like
+make and other tools, rdmd uses the relative dates of the files involved to
+minimize the amount of work necessary.  Unlike make, rdmd tracks dependencies
+and freshness without requiring additional information from the user.")
+      (license license:boost1.0))))
+
 (define-public ldc
   (package
     (name "ldc")