1 files changed, 76 insertions, 0 deletions
diff --git a/zig.scm b/zig.scm
index b41b7d2..c2a8714 100644
--- a/zig.scm
+++ b/zig.scm
@@ -85,3 +85,79 @@ toolchain.  Among other features it provides
 @end itemize")
     (home-page "https://github.com/ziglang/zig")
     (license license:expat)))
+
+
+(define-public zig-master
+  (package
+    (name "zig")
+    (version "master")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/ziglang/zig.git")
+               (commit version)))
+        (file-name (git-file-name name version))
+        (sha256
+          (base32 "0i4sd6888xxbzz5f45sxnlys9fvhkcir829jzlr3dijkdn6c74fy"))
+        (patches (search-patches "zig-do-not-link-against-librt.patch"))))
+    (build-system cmake-build-system)
+    (arguments
+     `(#:configure-flags
+       (list ,@(if (%current-target-system)
+                   '(string-append "-DZIG_TARGET_TRIPLE="
+                                   (%current-target-system))
+                   '())
+             (string-append "-DZIG_TARGET_MCPU=baseline")
+             "-DZIG_SHARED_LLVM=ON"
+             (string-append "-DZIG_LIB_DIR=" (assoc-ref %outputs "out")
+                            "/lib/zig"))
+       #:validate-runpath? #f       ; TODO: zig binary can't find ld-linux.
+       #:out-of-source? #f          ; for tests
+       #:phases
+       (modify-phases %standard-phases
+         (add-after 'unpack 'set-env-variables
+           (lambda* (#:key inputs native-inputs #:allow-other-keys)
+             ;; Set CC, since the stage 2 zig relies on it to find the libc
+             ;; installation, and otherwise silently links against its own.
+             (setenv "CC" ,(cc-for-target))
+             ;; Set cache dir, otherwise Zig looks for `$HOME/.cache'.
+             (setenv "ZIG_GLOBAL_CACHE_DIR"
+                     (string-append (getcwd) "/zig-cache"))))
+         (add-after 'patch-source-shebangs 'patch-more-shebangs
+           (lambda* (#:key inputs #:allow-other-keys)
+             ;; Zig uses information about /usr/bin/env to determine the
+             ;; version of glibc and other data.
+             (substitute* "lib/std/zig/system/NativeTargetInfo.zig"
+               (("/usr/bin/env") (search-input-file inputs "/bin/env")))))
+         (delete 'check)
+         (add-after 'install 'check
+           (lambda* (#:key outputs tests? #:allow-other-keys)
+             (when tests?
+               (invoke (string-append (assoc-ref outputs "out") "/bin/zig")
+                       "build" "test"
+                       ;; We're not testing the compiler bootstrap chain.
+                       ;; Non-native tests try to link and execute non-native
+                       ;; binaries.
+                       "-Dskip-non-native")))))))
+    (inputs
+      (list clang-17 ; Clang propagates llvm.
+            lld-17
+            zlib
+            (list zstd "lib")))
+    ;; Zig compiles fine with GCC, but also needs native LLVM libraries.
+    (native-inputs
+      (list llvm-17))
+    (synopsis "General purpose programming language and toolchain")
+    (description "Zig is a general-purpose programming language and
+toolchain.  Among other features it provides
+@itemize
+@item an Optional type instead of null pointers,
+@item manual memory management,
+@item generic data structures and functions,
+@item compile-time reflection and compile-time code execution,
+@item integration with C using zig as a C compiler, and
+@item concurrency via async functions.
+@end itemize")
+    (home-page "https://github.com/ziglang/zig")
+    (license license:expat)))