Add Zig project discovery

CHANGELOG.md

@@ -18,6 +18,7 @@
 * [#1892](https://github.com/bbatsov/projectile/pull/1892): Add category metadata to `completing-read`. (it's used by packages like `marginalia` and `embark`)
 * [#1899](https://github.com/bbatsov/projectile/pull/1899): Add support for xmake build utility.
 * [#1895](https://github.com/bbatsov/projectile/pull/1895): Modify projectile-mode to add a hook to `buffer-list-update-hook` such that any change in the buffer list will update the selected project.
+* [#1918](https://github.com/bbatsov/projectile/pull/1895): Add Zig project discovery.
 
 ### Bugs fixed
 

projectile.el

@@ -3626,6 +3626,13 @@ a manual COMMAND-TYPE command is created with
                                   :compile "dune build"
                                   :test "dune runtest")
 
+;; Zig
+(projectile-register-project-type 'zig '("build.zig.zon")
+                                  :project-file "build.zig.zon"
+                                  :compile "zig build"
+                                  :test "zig build test"
+                                  :run "zig build run")
+
 (defvar-local projectile-project-type nil
   "Buffer local var for overriding the auto-detected project type.
 Normally you'd set this from .dir-locals.el.")

test/projectile-test.el

@@ -1363,7 +1363,16 @@ Just delegates OPERATION and ARGS for all operations except for`shell-command`'.
        "project/Project.toml")
       (let ((projectile-indexing-method 'native))
         (spy-on 'projectile-project-root :and-return-value (file-truename (expand-file-name "project/")))
-        (expect (projectile-detect-project-type) :to-equal 'julia))))))
+        (expect (projectile-detect-project-type) :to-equal 'julia)))))
+  (it "detects project-type for Zig projects"
+    (projectile-test-with-sandbox
+     (projectile-test-with-files
+      ("project/"
+       "project/src/"
+       "project/build.zig.zon")
+      (let ((projectile-indexing-method 'native))
+        (spy-on 'projectile-project-root :and-return-value (file-truename (expand-file-name "project/")))
+        (expect (projectile-detect-project-type) :to-equal 'zig))))))
 
 (describe "projectile-dirname-matching-count"
   (it "counts matching dirnames ascending file paths"