feat: add nix package build definition

default.nix

@@ -0,0 +1,38 @@
+{lib, buildGoModule, fetchFromGitHub }:
+
+buildGoModule rec {
+
+
+  pname = "cocommit";
+  version = "1.3.0";
+
+  src = fetchFromGitHub {
+    owner = "Slug-Boi";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-oraadDCyek8qnXFZPj2yitXL3KPK+uW1/VZphrEa/MU=";
+  };
+
+  vendorHash = null;
+
+  buildPhase = ''
+    make build-nix
+  '';
+  
+  doCheck = false;
+
+  installPhase = ''
+    mkdir -p $out/bin
+    cp "src_code/go_src/${pname}" "$out/bin/${pname}"
+    chmod +x $out/bin/${pname}
+  '';
+
+  makefile = "makefile";
+
+  meta = with lib; {
+    description = "Cocommit is a CLI that makes it easier to co-author users on git commits";
+    homepage = "https://github.com/Slug-Boi/${pname}";
+    license = licenses.mit;
+    platforms = platforms.unix;
+  };
+}