Initial commit

flake.nix

@@ -0,0 +1,90 @@
+{
+  description = "Crane integration with flake-parts";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+    parts.url = "github:hercules-ci/flake-parts";
+
+    fenix.url = "github:nix-community/fenix";
+    fenix.inputs.nixpkgs.follows = "nixpkgs";
+    fenix.inputs.rust-analyzer-src.follows = "";
+
+    crane.url = "github:ipetkov/crane";
+    crane.inputs.nixpkgs.follows = "nixpkgs";
+
+    rustManifest = {
+      url = "https://static.rust-lang.org/dist/2023-02-02/channel-rust-nightly.toml";
+      flake = false;
+    };
+  };
+
+  outputs = inputs:
+    with builtins;
+    with inputs.nixpkgs.lib;
+    inputs.parts.lib.mkFlake { inherit inputs; } {
+      flake.flakeModules = {
+        crane = import ./crane.nix inputs.crane;
+        fenix = import ./fenix.nix inputs.fenix;
+      };
+
+      flake.flakeModule = {
+        imports = attrValues inputs.self.flakeModules;
+      };
+
+      systems = [ "x86_64-linux" ];
+
+      perSystem = { pkgs, system, ... }: {
+        # checks.runExampleChecks = pkgs.stdenv.mkDerivation {
+        #   name = "run-example-checks";
+        #   dontUnpack = true;
+        #   nestedChecks =
+        #     let
+        #       examplesDir = ./examples;
+        #       children = readDir examplesDir;
+        #       exampleDirs = filter (n: children.${n} == "directory") (attrNames children);
+        #       exampleChecks = concatMap
+        #         (d:
+        #           let
+        #             flakeDef = import "${examplesDir}/${d}/flake.nix";
+        #             flakeInputs = inputs // { self = outputs; rust = inputs.self; };
+        #             outputs = flakeDef // (flakeDef.outputs flakeInputs) // { _type = "flake"; inputs = flakeInputs; };
+        #           in
+        #           attrValues (outputs.checks.${system} or { }))
+        #         exampleDirs;
+        #     in
+        #     map toString exampleChecks;
+        #   buildPhase =
+        #     ''
+        #       echo $nestedChecks
+        #       touch $out
+        #     '';
+
+        # };
+
+        checks =
+          let
+            examplesDir = ./. + "/examples";
+            children = readDir examplesDir;
+            exampleDirs = filter (n: children.${n} == "directory") (attrNames children);
+            exampleChecks = map
+              (dir:
+                let
+                  flakeDef = import "${examplesDir}/${dir}/flake.nix";
+                  flakeInputs = inputs // {
+                    self = flakeOutputs;
+                    rust = inputs.self;
+                  };
+                  flakeOutputs = flakeDef //
+                    (flakeDef.outputs flakeInputs) // {
+                    _type = "flake";
+                    inputs = flakeInputs;
+                  };
+                in
+                  flakeOutputs.checks.${system} or { })
+              exampleDirs;
+          in
+          foldl' (sofar: next: sofar // next) { } exampleChecks;
+      };
+    };
+}