colima: embed version and git revision

These are shown on `colima version`

See also https://github.com/abiosoft/colima/issues/301

pkgs/applications/virtualization/colima/default.nix

@@ -14,13 +14,25 @@ buildGoModule rec {
     owner = "abiosoft";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-g7q2DmtyArtW7Ii2XF5umXQ0+BlCSa1Q7VNNuIuX65k=";
+    sha256 = "sha256-KYW3gxf21aWnuRHkysOjArzMSNH3m3XDoi6Sic3N+Po=";
+
+    # We need the git revision
+    leaveDotGit = true;
+    postFetch = ''
+      git -C $out rev-parse HEAD > $out/.git-revision
+      rm -rf $out/.git
+    '';
   };
 
   nativeBuildInputs = [ installShellFiles makeWrapper ];
 
   vendorSha256 = "sha256-Z4+qwoX04VnLsUIYRfOowFLgcaA9w8oGRl77jzFigIc=";
 
+  preConfigure = ''
+    ldflags="-X github.com/abiosoft/colima/config.appVersion=${version}
+              -X github.com/abiosoft/colima/config.revision=$(cat .git-revision)"
+  '';
+
   postInstall = ''
     wrapProgram $out/bin/colima \
       --prefix PATH : ${lib.makeBinPath [ lima ]}