Initial commit

1 files changed, 73 insertions, 0 deletions

diff --git a/flake.nix b/flake.nix
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+{
+  description = "pong";
+
+  # Nixpkgs / NixOS version to use.
+  inputs.nixpkgs.url = "nixpkgs/nixos-unstable";
+
+  outputs = { self, nixpkgs }:
+    let
+
+      # to work with older version of flakes
+      lastModifiedDate = self.lastModifiedDate or self.lastModified or "19700101";
+
+      # Generate a user-friendly version number.
+      version = builtins.substring 0 8 lastModifiedDate;
+
+      # System types to support.
+      supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
+
+      # Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+
+      # Nixpkgs instantiated for supported system types.
+      nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
+
+      deps = pkgs: with pkgs; [ libGL xorg.libXi xorg.libXcursor xorg.libXrandr xorg.libXinerama wayland libxkbcommon ];
+
+    in
+    {
+
+      # Provide some binary packages for selected system types.
+      packages = forAllSystems (system:
+        let
+          pkgs = nixpkgsFor.${system};
+        in
+        {
+          pongo = pkgs.buildGoModule {
+            pname = "pongo";
+            inherit version;
+            # In 'nix develop', we don't need a copy of the source tree
+            # in the Nix store.
+            src = ./.;
+
+            vendorHash = "sha256-ZWMZkwDMSUuuWCInVJ1YTd0W5GJedGrxYugKv1jhx2U=";
+
+            buildInputs = deps pkgs;
+
+            proxyVendor = true;
+            postFixup = ''
+              patchelf $out/bin/pongo --add-rpath ${pkgs.lib.makeLibraryPath [ pkgs.alsa-lib ]}
+            '';
+          };
+        });
+
+      # Add dependencies that are only needed for development
+      devShells = forAllSystems (system:
+        let
+          pkgs = nixpkgsFor.${system};
+        in
+        {
+          default = pkgs.mkShell {
+            nativeBuildInputs = with pkgs; [ go gopls gotools go-tools ] ++ deps pkgs;
+            shellHook = ''
+              export LD_LIBRARY_PATH=${pkgs.lib.makeLibraryPath [ pkgs.alsa-lib ]}
+            '';
+          };
+        });
+
+      # The default package for 'nix build'. This makes sense if the
+      # flake provides only one package or there is a clear "main"
+      # package.
+      defaultPackage = forAllSystems (system: self.packages.${system}.pongo);
+    };
+}