{ description = "diwt"; inputs = { nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable"; flake-compat = { url = "github:edolstra/flake-compat"; flake = false; }; nix-filter = { url = "github:numtide/nix-filter"; }; }; outputs = { self, nixpkgs, nix-filter, ... }: let projname = "diwt"; # to work with older version of flakes lastModifiedDate = self.lastModifiedDate or self.lastModified or "19700101"; # Generate a user-friendly version number. version = "v0.0.0"; # System types to support. supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "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; overlays = [ # no overlay imports atm # (import ./overlay.nix) ]; }); in rec { formatter = forAllSystems ( system: nixpkgsFor.${system}.alejandra ); packages = forAllSystems (system: let pkgs = nixpkgsFor.${system}; inherit (pkgs) lib overlays; # -> lib = pkgs.lib;overlays = pkgs.overlays; in rec { diwt = with pkgs; buildGo119Module rec { pname = "${projname}"; buildInputs = [ go ]; nativeBuildInputs = [pkgconfig]; overrideModAttrs = _: { # GOPROXY = "direct"; CGO_ENABLED = 0; GOFLAGS = "-buildmode=pie -trimpath -mod=readonly -modcacherw"; }; inherit version; doCheck = true; # use go.mod for managing go deps, instead of vendor-only dir proxyVendor = true; tags = []; # go "-tags" to build with ldflags = [ "-s" "-w" "-X main.version=${version}" ]; # dont't forget to update vendorSha256 whenever go.mod or go.sum change vendorSha256 = "sha256-pQpattmS9VmO3ZIQUFn66az8GSmB4IvYhTTCFn6SUmo="; # In 'nix develop', we don't need a copy of the source tree # in the Nix store. src = nix-filter.lib.filter { # when in doubt, check out # https://github.com/numtide/nix-filter#design-notes # tl;dr: it'd be best to include folders, however there are # currently issues with that approach. root = lib.cleanSource self; include = [ ./. ]; exclude = [ ./flake.nix ./flake.lock ./default.nix ./shell.nix ./README.md ./.envrc ./.drone.star ./.gitattributes ./.gitignore ./.golangci.yml ./.editorconfig ./.pre-commit-config.yaml # nix result symlink ./result # the entire .git folder ./.git # badges folder ./.badges ]; }; meta = { description = "diwt"; homepage = "https://git.dotya.ml/wanderer/diwt"; license = lib.licenses.gpl3; maintainers = ["wanderer"]; platforms = lib.platforms.linux ++ lib.platforms.darwin; }; }; default = diwt; }); apps = forAllSystems (system: rec { diwt = { type = "app"; program = "${self.packages.${system}.${projname}}/bin/${projname}"; }; default = diwt; }); devShells = forAllSystems ( system: let pkgs = import nixpkgs { inherit system; overlays = [ # (import ./overlay.nix) ]; }; goPkgs = import nixpkgs { useFetched = true; inherit system; overlays = self.overlays or [] ++ [ # (import ./overlay.nix) ]; }; gob = pkgs.writeShellScriptBin "gob" '' cd $(git rev-parse --show-toplevel) go build -v ./... ''; gota = pkgs.writeShellScriptBin "gota" '' cd $(git rev-parse --show-toplevel) go test ./... ''; gogen = pkgs.writeShellScriptBin "gogen" '' cd $(git rev-parse --show-toplevel) go generate -v ./report ''; upcache = pkgs.writeShellScriptBin "upcache" '' ## refs: ## https://fzakaria.com/2020/08/11/caching-your-nix-shell.html ## https://nixos.wiki/wiki/Caching_nix_shell_build_inputs nix-store --query --references $(nix-instantiate shell.nix) | \ xargs nix-store --realise | \ xargs nix-store --query --requisites | \ cachix push ${projname} nix build --json \ | jq -r '.[].outputs | to_entries[].value' \ | cachix push ${projname} ''; add-license = pkgs.writeShellScriptBin "add-license" '' go run github.com/google/addlicense@v1.0.0 -v \ -c "wanderer " \ -l "GPL-3.0-or-later" -s -ignore "*.yaml" . ''; in { default = with pkgs; mkShell { name = "${projname}-" + version; GOFLAGS = "-buildmode=pie -trimpath -mod=readonly -modcacherw"; GOLDFLAGS = "-s -w -X main.version=${version}"; CGO_ENABLED = 0; # CGO_CFLAGS = "-g0 -mtune=native"; # CGO_LDFLAGS = "-Wl,-O1,-sort-common,-as-needed,-z,relro,-z,now,-flto -pthread"; GOPROXY = "direct"; shellHook = '' echo " -- in ${projname} dev shell..." ''; nativeBuildInputs = [ ]; packages = [ # use pathed go, as it's (supposed to be) faster with cgo, # which will inevitably encountered anyway. go_1_19 go-tools gopls gofumpt statix alejandra ## ad-hoc cmds gob gota gogen upcache add-license ] ++ ( if stdenv.isLinux then [ ] else [] ); }; } ); }; }