initial commit

flake.nix

@@ -0,0 +1,65 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  };
+  outputs = {
+    nixpkgs,
+    self,
+  }: let
+    forAllSystems = fn:
+      builtins.foldl' (attrs: system: let
+        outputs = fn system;
+        outputNames = builtins.attrNames outputs;
+      in
+        builtins.foldl' (attrs: outName: let
+          existing = attrs.${outName} or {};
+          new = existing // {${system} = outputs.${outName};};
+        in
+          attrs // {${outName} = new;})
+        attrs
+        outputNames) {} ["x86_64-linux" "aarch64-linux"];
+  in
+    {
+      overlays.default = final: prev: {
+        nix-ci = final.lib.flip final.callPackage {} ({
+          rustPlatform,
+          lib,
+          makeWrapper,
+          nix-eval-jobs,
+        }: let
+          cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
+        in
+          rustPlatform.buildRustPackage {
+            pname = cargoToml.package.name;
+            version = cargoToml.package.version;
+            src = lib.fileset.toSource {
+              root = ./.;
+              fileset = lib.fileset.unions [
+                ./src
+                ./Cargo.toml
+                ./Cargo.lock
+              ];
+            };
+            nativeBuildInputs = [makeWrapper];
+            cargoLock.lockFile = ./Cargo.lock;
+            preFixup = ''
+              wrapProgram "$out/bin/nix-ci" \
+                --prefix PATH : ${lib.makeBinPath [nix-eval-jobs]}
+            '';
+          });
+      };
+    }
+    // forAllSystems (system: let
+      pkgs = import nixpkgs {
+        inherit system;
+        overlays = [self.overlays.default];
+      };
+    in {
+      devShells.default = import ./shell.nix {inherit pkgs;};
+      packages = {
+        default = pkgs.nix-ci;
+        nix-ci = pkgs.nix-ci;
+      };
+      checks = self.packages.${system};
+    });
+}