Turn this repository into a Nix flake

.github/workflows/go.yml

@@ -7,13 +7,12 @@ on:
   pull_request:
 
 jobs:
-  main:
-    name: Main
+  docker:
+    name: Docker
     runs-on: ubuntu-22.04
     permissions:
       pull-requests: write
       contents: read
-
     steps:
       - name: Checkout
         id: checkout
@@ -67,3 +66,35 @@ jobs:
           ./trac2gitea --help 2>&1 | grep -q '^Usage' \
           && echo 'PASS' \
           || { echo 'FAIL'; exit 1; }
+
+  nix:
+    name: Nix
+    runs-on: ubuntu-22.04
+    permissions:
+      pull-requests: write
+      contents: read
+    strategy:
+      matrix:
+        nix_channel:
+          - nixos-stable
+          - nixos-unstable
+    steps:
+      - name: Checkout
+        id: checkout
+        uses: actions/checkout@v4
+
+      - name: Install Nix
+        id: install_nix
+        uses: cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:${{ matrix.nix_channel }}
+
+      - name: Check
+        id: check
+        run: |
+          nix flake check
+
+      - name: Build
+        id: build
+        run: |
+          nix-build

default.nix

@@ -0,0 +1,21 @@
+{ pkgs ? (
+    let
+      inherit (builtins) fetchTree fromJSON readFile;
+      inherit ((fromJSON (readFile ./flake.lock)).nodes) nixpkgs gomod2nix;
+    in
+    import (fetchTree nixpkgs.locked) {
+      overlays = [
+        (import "${fetchTree gomod2nix.locked}/overlay.nix")
+      ];
+    }
+  )
+, buildGoApplication ? pkgs.buildGoApplication
+}:
+
+buildGoApplication {
+  pname = "trac2gitea";
+  version = "0.1";
+  pwd = ./.;
+  src = ./.;
+  modules = ./gomod2nix.toml;
+}

flake.nix

@@ -0,0 +1,29 @@
+{
+  description = "A basic gomod2nix flake for trac2gitea";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.gomod2nix.url = "github:nix-community/gomod2nix";
+  inputs.gomod2nix.inputs.nixpkgs.follows = "nixpkgs";
+  inputs.gomod2nix.inputs.flake-utils.follows = "flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils, gomod2nix }:
+    (flake-utils.lib.eachDefaultSystem
+      (system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+
+          # The current default sdk for macOS fails to compile go projects, so we use a newer one for now.
+          # This has no effect on other platforms.
+          callPackage = pkgs.darwin.apple_sdk_11_0.callPackage or pkgs.callPackage;
+        in
+        {
+          packages.default = callPackage ./. {
+            inherit (gomod2nix.legacyPackages.${system}) buildGoApplication;
+          };
+          devShells.default = callPackage ./shell.nix {
+            inherit (gomod2nix.legacyPackages.${system}) mkGoEnv gomod2nix;
+          };
+        })
+    );
+}

gomod2nix.toml

@@ -0,0 +1,102 @@
+schema = 3
+
+[mod]
+  [mod."github.com/emirpasic/gods"]
+    version = "v1.12.0"
+    hash = "sha256-IavlXdTPaXr/n0ZjfPm3SmpndU70l5RnrINvqQ7GuEQ="
+  [mod."github.com/go-ini/ini"]
+    version = "v1.67.0"
+    hash = "sha256-V10ahGNGT+NLRdKUyRg1dos5RxLBXBk1xutcnquc/+4="
+  [mod."github.com/go-sql-driver/mysql"]
+    version = "v1.7.0"
+    hash = "sha256-xcCINvN+wEiLLmp9ltfLbDEs+/TidoBCQLODw3lMyzE="
+  [mod."github.com/golang-sql/civil"]
+    version = "v0.0.0-20220223132316-b832511892a9"
+    hash = "sha256-IEz9BkkHyFfs9R4aMxH/c/tD510qSyFEaKrpO4arWpQ="
+  [mod."github.com/golang-sql/sqlexp"]
+    version = "v0.1.0"
+    hash = "sha256-FhKWdt7vwzTbIsx2u+AzrKO1VFxTw/lbgD9/V5G76jw="
+  [mod."github.com/jackc/pgpassfile"]
+    version = "v1.0.0"
+    hash = "sha256-H0nFbC34/3pZUFnuiQk9W7yvAMh6qJDrqvHp+akBPLM="
+  [mod."github.com/jackc/pgservicefile"]
+    version = "v0.0.0-20221227161230-091c0ba34f0a"
+    hash = "sha256-rBtUw15WPPDp2eulHXH5e2zCIed1OPFYwlCpgDOnGRM="
+  [mod."github.com/jackc/pgx/v5"]
+    version = "v5.3.1"
+    hash = "sha256-0v6gXZIirv80mlnUx3ycxB2/TLvv3rUnm98Ke1ZjYDQ="
+  [mod."github.com/jbenet/go-context"]
+    version = "v0.0.0-20150711004518-d14ea06fba99"
+    hash = "sha256-VANNCWNNpARH/ILQV9sCQsBWgyL2iFT+4AHZREpxIWE="
+  [mod."github.com/jinzhu/inflection"]
+    version = "v1.0.0"
+    hash = "sha256-3h3pHib5MaCXKyKLIMyQnSptDJ16kPjCOQPoEBoQsZg="
+  [mod."github.com/jinzhu/now"]
+    version = "v1.1.5"
+    hash = "sha256-NNLqoFx9FczBBDpD0O0aSHnC/YDZ9E/xQ340o7u63IM="
+  [mod."github.com/kevinburke/ssh_config"]
+    version = "v0.0.0-20190725054713-01f96b0aa0cd"
+    hash = "sha256-X5L36JG7T2deBkHBABUYf2rQKle8ve35bH/FQeWUrq8="
+  [mod."github.com/mattn/go-sqlite3"]
+    version = "v1.14.22"
+    hash = "sha256-CWF2Hjg43658NhaePWbGzS19gHJXjuTroG5c0W3hgYQ="
+  [mod."github.com/microsoft/go-mssqldb"]
+    version = "v0.21.0"
+    hash = "sha256-cAUiV2kw/0M9jldWtqdDC+gboAwGNUS3dNHSDM5EKgo="
+  [mod."github.com/mitchellh/go-homedir"]
+    version = "v1.1.0"
+    hash = "sha256-oduBKXHAQG8X6aqLEpqZHs5DOKe84u6WkBwi4W6cv3k="
+  [mod."github.com/pkg/errors"]
+    version = "v0.8.1"
+    hash = "sha256-oe3iddfoLRwpC3ki5fifHf2ZFprtg99iNak50shiuDw="
+  [mod."github.com/sergi/go-diff"]
+    version = "v1.0.0"
+    hash = "sha256-I8rbJFKm44u/wS/gz+2yX9882xXcBdb9mKEKq5OoJRU="
+  [mod."github.com/spf13/pflag"]
+    version = "v1.0.5"
+    hash = "sha256-w9LLYzxxP74WHT4ouBspH/iQZXjuAh2WQCHsuvyEjAw="
+  [mod."github.com/src-d/gcfg"]
+    version = "v1.4.0"
+    hash = "sha256-mXSyOVMB6hSuTddVkBV4+skshppmSu4Klzz7OnVJkhA="
+  [mod."github.com/xanzy/ssh-agent"]
+    version = "v0.2.1"
+    hash = "sha256-WwVQw4YDBvsLk8vTsqSJXVSRUhMm69erv1ubVralErI="
+  [mod."go.uber.org/mock"]
+    version = "v0.4.0"
+    hash = "sha256-mJN2cPmAMTZQzOnTpJ8zi9QH2m3OAKI4IpnQW9QYS8s="
+  [mod."golang.org/x/crypto"]
+    version = "v0.8.0"
+    hash = "sha256-gZ225jF4mxRLlba6OzdTvrsP6kLYf/xOjWMFavCF6tY="
+  [mod."golang.org/x/net"]
+    version = "v0.9.0"
+    hash = "sha256-EG5GRDq282twyce8uugsDTjMz1pNn6zPcyVTZmSiJ14="
+  [mod."golang.org/x/sys"]
+    version = "v0.7.0"
+    hash = "sha256-GotRHJaas/q3L+tFam0q3oQ1rc8GDStt7wnz9h8MTEU="
+  [mod."golang.org/x/text"]
+    version = "v0.9.0"
+    hash = "sha256-tkhDeMsSQZr3jo7vmKehWs3DvWetwXR0IB+DCLbQ4nk="
+  [mod."gopkg.in/src-d/go-billy.v4"]
+    version = "v4.3.2"
+    hash = "sha256-W1n8AsBrIhWBe3Jz5ZR1DTwLrE9q0vBR/Uqk4/yYppg="
+  [mod."gopkg.in/src-d/go-git.v4"]
+    version = "v4.13.1"
+    hash = "sha256-uj7etQusc05Tezv5lW7rU+22I9WVQdn6h4PhC6dZzgE="
+  [mod."gopkg.in/warnings.v0"]
+    version = "v0.1.2"
+    hash = "sha256-ATVL9yEmgYbkJ1DkltDGRn/auGAjqGOfjQyBYyUo8s8="
+  [mod."gorm.io/driver/mysql"]
+    version = "v1.5.0"
+    hash = "sha256-/p12Sj0arPFJp0Ka8aY1OTacCPCW9/NGTWaGPyrKiWM="
+  [mod."gorm.io/driver/postgres"]
+    version = "v1.5.0"
+    hash = "sha256-t1stGhKLrMwbOxLsh1LkSM9Wu9QMOOnSwkR8l851o/M="
+  [mod."gorm.io/driver/sqlite"]
+    version = "v1.5.0"
+    hash = "sha256-iHSonxWbuLBba8AFat0mKBXmUBsDLh/V3jqYM8JX3IE="
+  [mod."gorm.io/driver/sqlserver"]
+    version = "v1.4.3"
+    hash = "sha256-RUJnLstMhz31hxBv4YD3hC4fHlskcQ89IsvoRv78FxU="
+  [mod."gorm.io/gorm"]
+    version = "v1.25.0"
+    hash = "sha256-8ORQqnnDhdy9/ubT6dPNVehkkmy8+ff7ynB24myC2Wk="

shell.nix

@@ -0,0 +1,24 @@
+{ pkgs ? (
+    let
+      inherit (builtins) fetchTree fromJSON readFile;
+      inherit ((fromJSON (readFile ./flake.lock)).nodes) nixpkgs gomod2nix;
+    in
+    import (fetchTree nixpkgs.locked) {
+      overlays = [
+        (import "${fetchTree gomod2nix.locked}/overlay.nix")
+      ];
+    }
+  )
+, mkGoEnv ? pkgs.mkGoEnv
+, gomod2nix ? pkgs.gomod2nix
+}:
+
+let
+  goEnv = mkGoEnv { pwd = ./.; };
+in
+pkgs.mkShell {
+  packages = [
+    goEnv
+    gomod2nix
+  ];
+}