gnu: Add swift-cmark.

* gnu/packages/swift.scm: New file.
* gnu/local.mk (GNU_SYSTEM_MODULES): Add reference to it.

Change-Id: I107a466da824670ce71f38b9e03be06b1e35612a

gnu/local.mk

@@ -648,6 +648,7 @@ GNU_SYSTEM_MODULES =				\
   %D%/packages/storage.scm			\
   %D%/packages/suckless.scm			\
   %D%/packages/sugar.scm			\
+  %D%/packages/swift.scm			\
   %D%/packages/swig.scm				\
   %D%/packages/sycl.scm				\
   %D%/packages/sync.scm			\

gnu/packages/swift.scm

@@ -0,0 +1,72 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2025 Danny Milosavljevic <dannym@friendly-machines.com>
+;;;
+;;; 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 (gnu packages swift)
+  #:use-module (guix packages)
+  #:use-module ((guix licenses) #:prefix license:)
+  #:use-module (guix git-download)
+  #:use-module (guix gexp)
+  #:use-module (guix build-system cmake)
+  #:use-module (gnu packages)
+  #:use-module (gnu packages cmake)
+  #:use-module (gnu packages ninja)
+  #:use-module (gnu packages python))
+
+(define %swift-bootstrap-version "5.7.3")
+
+(define-public swift-cmark
+  (package
+    (name "swift-cmark")
+    (version %swift-bootstrap-version)
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/apple/swift-cmark.git")
+                    (commit (string-append "swift-" %swift-bootstrap-version
+                                           "-RELEASE"))))
+              (file-name (git-file-name "swift-cmark" %swift-bootstrap-version))
+              (sha256
+               (base32
+                "0340j9x2n40yx61ma2pgqfbn3a9ijrh20iwzd1zxqq87rr76hh3z"))))
+    (build-system cmake-build-system)
+    (arguments
+     (list
+      #:tests? #f
+      #:build-type "Release"
+      #:configure-flags
+      #~(list (string-append "-DCMAKE_INSTALL_PREFIX=" #$output))
+      #:phases
+      #~(modify-phases %standard-phases
+          (add-after 'install 'install-cmake-exports
+            (lambda _
+              (install-file "src/cmarkTargets.cmake"
+                            (string-append #$output "/src"))
+              (substitute* (string-append #$output "/src/cmarkTargets.cmake")
+                (("/tmp/guix-build-swift-cmark-[^/]+/source/src")
+                 #$output)
+                (("/tmp/guix-build-swift-cmark-[^/]+/build/src")
+                 (string-append #$output "/lib")))
+              #t)))))
+    (native-inputs
+     (list cmake ninja python-3))
+    (home-page "https://swift.org/")
+    (synopsis "CommonMark parsing and rendering library for Swift")
+    (description
+     "This is Apple's fork of cmark (CommonMark implementation) with
+Swift-specific modifications, required to build Swift 4.2.4.")
+    (license license:bsd-2)))