check

.github/workflows/test.yml

···
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v30
       - run: nix run -L .#checkmate-treefmt -- --ci $PWD
+      - run: nix flake check -L 
       - run: nix flake check -L --override-input target path:$PWD/example
       - run: |
           nix flake check -L --override-input target path:$PWD/failing-example || touch did-failed

README.md

···
 
 ```
 # On your github action
-nix check github:checkmate --override-input target path:$PWD
+nix check github:checkmate --override-input target path:$PWD -L --refresh
 ```

default.nix

···
 { inputs, ... }:
+let
+  flakeModule = {
+    systems = import inputs.systems;
+    imports = [
+      inputs.flake-parts.flakeModules.flakeModules
+      ./perSystem-lib.nix
+      ./tests.nix
+      ./treefmt.nix
+    ];
+  };
+in
 {
-  imports = [
-    inputs.flake-parts.flakeModules.flakeModules
-    ./perSystem-lib.nix
-    ./tests.nix
-    ./treefmt.nix
-  ];
-
-  systems = import inputs.systems;
-  flake.flakeModules.default = ./default.nix;
+  imports = [ flakeModule ];
+  flake.flakeModules.default = flakeModule;
 }

example/flake.nix

···
 {
-  inputs.empty.url = "github:vic/empty-flake"; # example dependency
+  inputs.dep.url = "github:nix-systems/x86_64-linux"; # example dependency
 
   outputs = _inputs: {
 
     # Example
     flakeModules.nix-unit =
-      { ... }: # you can access inputs.target.inputs.empty from here
+      { inputs, ... }:
       {
         perSystem = (
           { lib, ... }:
           {
             nix-unit.tests = {
-              checkmate."test lib works" = {
-                expr = lib.removeSuffix ".nix" "hello.nix";
-                expected = "hello";
+              checkmate."test access inputs via target" = {
+                expr = lib.removePrefix "x86_64-" (lib.elemAt (import inputs.target.inputs.dep) 0);
+                expected = "linux";
               };
             };
           }

flake.lock

···
 {
   "nodes": {
+    "empty": {
+      "locked": {
+        "lastModified": 1741993073,
+        "narHash": "sha256-hTJPMh9Bwky2TlaWmLrkBHdUBmpxSCPRK+bmnFNpNQE=",
+        "owner": "vic",
+        "repo": "empty-flake",
+        "rev": "a402c2c33ff3f5010eb0357d8228f27fb7083cbd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "vic",
+        "repo": "empty-flake",
+        "type": "github"
+      }
+    },
     "flake-parts": {
       "inputs": {
         "nixpkgs-lib": [
···
       }
     },
     "target": {
+      "inputs": {
+        "empty": "empty"
+      },
       "locked": {
-        "dir": "failing-example",
-        "lastModified": 1742084732,
-        "narHash": "sha256-yoe7izv/Cl/qkCyn3HzsPAwlWNlTTeI6waBiIJEoMaY=",
+        "dir": "example",
+        "lastModified": 1742085978,
+        "narHash": "sha256-G4yl2Kdrx2vI0qJ7EUgFd6eaadcngjg37XDzDBbpSWg=",
         "owner": "vic",
         "repo": "checkmate",
-        "rev": "9132a1ffd6cca2527aae6e669976940ae6e6f030",
+        "rev": "af3b609faa00ef97b2fc2ca81f400249f80169af",
         "type": "github"
       },
       "original": {
-        "dir": "failing-example",
+        "dir": "example",
         "owner": "vic",
         "repo": "checkmate",
         "type": "github"

flake.nix

···
   inputs = {
     # example target flake to be tested
     # override with something else.
-    target.url = "github:vic/checkmate?dir=failing-example";
+    target.url = "github:vic/checkmate?dir=example";
 
     nixpkgs.url = "github:nixos/nixpkgs/24.11";
     systems.url = "github:nix-systems/default";

tests.nix

···
   imports = [
     # Tests are defined by target, and imported bellow by `inputs.target.flakeModules.nix-unit`.
     # See example/flake.nix or https://github.com/vic/import-tree/tree/main/checks/default.nix
-    inputs.target.flakeModules.nix-unit
+    (inputs.target or inputs.self).flakeModules.nix-unit
     inputs.nix-unit.modules.flake.default
   ];
 
   perSystem = (
     { ... }:
-    let
-      fixedInputs = inputs // inputs.target.inputs;
-    in
     {
       nix-unit.allowNetwork = true;
-      nix-unit.inputs = fixedInputs;
+      nix-unit.inputs = inputs;
     }
   );
 }

treefmt.nix

···
         programs.yamlfmt.enable = true;
       };
       treefmt-wrapper = treefmt.config.build.wrapper;
-      treefmt-check = treefmt.config.build.check inputs.target;
+      treefmt-check = treefmt.config.build.check (inputs.target or inputs.self);
     in
     {
       packages.checkmate-treefmt = treefmt-wrapper;