Exclude more paths from colmena.src to reduce rebuilds

.srcignore

@@ -0,0 +1,18 @@
+# Exclusions from source distribution
+#
+# Files listed here will not be part of colmena.src
+
+/.github
+/CNAME
+/renovate.json
+
+/manual
+/integration-tests
+
+/nix
+/default.nix
+/flake-compat.nix
+/package.nix
+/shell.nix
+
+# vim: set ft=gitignore:

package.nix

@@ -1,18 +1,16 @@
-{ lib, stdenv, rustPlatform, installShellFiles, nix-eval-jobs }:
+{ lib
+, stdenv
+, rustPlatform
+, nix-gitignore
+, installShellFiles
+, nix-eval-jobs
+}:
 
 rustPlatform.buildRustPackage rec {
   pname = "colmena";
   version = "0.5.0-pre";
 
-  src = lib.cleanSourceWith {
-    filter = name: type: !(type == "directory" && builtins.elem (baseNameOf name) [
-      ".github"
-      "target"
-      "manual"
-      "integration-tests"
-    ]);
-    src = lib.cleanSource ./.;
-  };
+  src = nix-gitignore.gitignoreSource [ ./.srcignore ] ./.;
 
   cargoLock = {
     lockFile = ./Cargo.lock;