Pass flake git rev down to package ldflags

flake.nix

@@ -17,6 +17,7 @@
       inherit (nixpkgs.lib) nixosSystem;
       system = "x86_64-linux";
       pkgs = nixpkgs.legacyPackages.${system};
+      gitRev = toString (self.rev or self.dirtyRev or "0000000000000000000000000000000000000000");
     in
     {
       formatter.${system} = nixpkgs.legacyPackages.${system}.nixfmt-rfc-style;
@@ -48,7 +49,7 @@
       };
 
       overlays.default = final: prev: {
-        intake = final.callPackage ./package.nix { };
+        intake = final.callPackage ./package.nix { inherit gitRev; };
       };
     
       nixosModules.default = import ./module.nix self;

package.nix

@@ -2,6 +2,7 @@
   buildGoModule,
   jq,
   lib,
+  gitRev ? "0000000000000000000000000000000000000000"
 }:
 let
   inherit (lib.fileset)
@@ -25,6 +26,10 @@ buildGoModule {
   };
   vendorHash = "sha256-sv4rlURaTatxJ5atYWYzD2O4EiuPp66i0RY5lQzhBKU=";
 
+  ldflags = [
+    "-X github.com/Jaculabilis/intake/core.Commit=${gitRev}"
+  ];
+
   nativeBuildInputs = [ jq ];
 
   meta = { };