Filter source in Nix build to prevent spurious rebuilds

vojta001 · May 4, 2021 · 51c559b · 51c559b
1 parent f1ca80c
commit 51c559b
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Showing 2 changed files with 21 additions and 2 deletions.
diff --git a/flake.lock b/flake.lock
diff --git a/flake.nix b/flake.nix
@@ -1,16 +1,18 @@
 {
+
   description = "Tinyquiz – an open source online quiz platform";
 
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.nix-filter.url = "github:numtide/nix-filter/master";
 
-  outputs = { self, nixpkgs }:
+  outputs = { self, nixpkgs, nix-filter }:
   let
     pkgs = nixpkgs.legacyPackages.x86_64-linux;
     buildCmd = name:
       (pkgs.buildGoPackage {
         pname = "tinyquiz-${name}";
         version = "dev";
-        src = ./.;
+        src = with nix-filter.lib; filter { root = ./.; include = [ (inDirectory "cmd") (inDirectory "pkg") (inDirectory "ui") "go.mod" "go.sum" ]; };
         goDeps = ./deps.nix;
         preBuild = "go generate vkane.cz/tinyquiz/...";
         checkPhase = "go test -race vkane.cz/tinyquiz/...";