Add flake to build via Nix and gomod2nix

.envrc

@@ -0,0 +1 @@
+use flake

.gitignore

@@ -13,3 +13,6 @@
 **/debug.test
 
 vendor
+
+result
+.direnv/

flake.nix

@@ -0,0 +1,59 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/24.05";
+    gomod2nix = {
+      url = "github:nix-community/gomod2nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    flake-utils.url = "github:numtide/flake-utils";
+    treefmt-nix.url = "github:numtide/treefmt-nix";
+  };
+
+  outputs =
+    { self
+    , nixpkgs
+    , gomod2nix
+    , flake-utils
+    , treefmt-nix
+    , ...
+    }:
+    flake-utils.lib.eachDefaultSystem (system:
+    let
+      pumba = with pkgs; gomod2nix.legacyPackages.${system}.buildGoApplication {
+        name = "pumba";
+        src = ./.;
+        pwd = ./.; # Must be added due to bug https://github.com/nix-community/gomod2nix/issues/120
+
+        # Rename the binary as it's called 'cmd' presently.
+        fixupPhase = ''
+          mv $out/bin/cmd $out/bin/pumba
+        '';
+      };
+
+      goEnv = gomod2nix.legacyPackages.${system}.mkGoEnv { pwd = ./.; };
+
+      pkgs = import nixpkgs { inherit system; };
+    in
+    {
+      # Development shells for hacking
+      devShells.default = pkgs.mkShell {
+        packages = with pkgs; [
+          goEnv
+          gomod2nix.packages.${system}.default # gomod2nix CLI
+        ];
+      };
+
+      packages = {
+        default = pumba;
+      };
+
+      formatter =
+        let
+          fmt = treefmt-nix.lib.evalModule pkgs (_: {
+            projectRootFile = "flake.nix";
+            programs.nixpkgs-fmt.enable = true;
+          });
+        in
+        fmt.config.build.wrapper;
+    });
+}

gomod2nix.toml

@@ -0,0 +1,102 @@
+schema = 3
+
+[mod]
+  [mod."github.com/Microsoft/go-winio"]
+    version = "v0.6.1"
+    hash = "sha256-BL0BVaHtmPKQts/711W59AbHXjGKqFS4ZTal0RYnR9I="
+  [mod."github.com/cpuguy83/go-md2man/v2"]
+    version = "v2.0.2"
+    hash = "sha256-OvWCtDsVrYzM84SMQwOXPLBxnWnMC1hDm+KiI6zm3uk="
+  [mod."github.com/davecgh/go-spew"]
+    version = "v1.1.1"
+    hash = "sha256-nhzSUrE1fCkN0+RL04N4h8jWmRFPPPWbCuDc7Ss0akI="
+  [mod."github.com/docker/distribution"]
+    version = "v2.8.2+incompatible"
+    hash = "sha256-ocVWMRt5ErWdVsj3rsNa/QhizG5b/PCu8LoOlUi24/c="
+  [mod."github.com/docker/docker"]
+    version = "v23.0.3+incompatible"
+    hash = "sha256-JvrWYi6rfQW566wXke4HKUwlCdUTxR+kyTM2tz8pCO8="
+  [mod."github.com/docker/go-connections"]
+    version = "v0.4.0"
+    hash = "sha256-GHNIjOuuNp5lFQ308+nDNwQPGESCVV7bCUxSW5ZxZlc="
+  [mod."github.com/docker/go-units"]
+    version = "v0.5.0"
+    hash = "sha256-iK/V/jJc+borzqMeqLY+38Qcts2KhywpsTk95++hImE="
+  [mod."github.com/gogo/protobuf"]
+    version = "v1.3.2"
+    hash = "sha256-pogILFrrk+cAtb0ulqn9+gRZJ7sGnnLLdtqITvxvG6c="
+  [mod."github.com/google/go-cmp"]
+    version = "v0.5.9"
+    hash = "sha256-lQc4O00R3QSMGs9LP8Sy7A9kj0cqV5rrUdpnGeipIyg="
+  [mod."github.com/johntdyer/slack-go"]
+    version = "v0.0.0-20180213144715-95fac1160b22"
+    hash = "sha256-jd/Od/vnon2CEkxQ2Mf+w32fSSBIkTX0vgpytHJJYYw="
+  [mod."github.com/johntdyer/slackrus"]
+    version = "v0.0.0-20210521205746-42486fb4c48c"
+    hash = "sha256-80ztGeOVqiuja9MoHizUPqBoGRV378PFjZpx50/gbno="
+  [mod."github.com/kr/text"]
+    version = "v0.2.0"
+    hash = "sha256-fadcWxZOORv44oak3jTxm6YcITcFxdGt4bpn869HxUE="
+  [mod."github.com/moby/term"]
+    version = "v0.0.0-20210619224110-3f7ff695adc6"
+    hash = "sha256-ji80C4u0OJb59wIuPF4LiWf/yaGqZVfFsy+irp25Sc0="
+  [mod."github.com/morikuni/aec"]
+    version = "v1.0.0"
+    hash = "sha256-5zYgLeGr3K+uhGKlN3xv0PO67V+2Zw+cezjzNCmAWOE="
+  [mod."github.com/niemeyer/pretty"]
+    version = "v0.0.0-20200227124842-a10e7caefd8e"
+    hash = "sha256-m2D7hWZrDst0rb91lmjSuNrzBQbmQ0Oe2UOp3wn8qso="
+  [mod."github.com/opencontainers/go-digest"]
+    version = "v1.0.0"
+    hash = "sha256-cfVDjHyWItmUGZ2dzQhCHgmOmou8v7N+itDkLZVkqkQ="
+  [mod."github.com/opencontainers/image-spec"]
+    version = "v1.1.0-rc4"
+    hash = "sha256-rsc3wL80rmQhf4tiHQ0RJAcTsbdzqqS3TIlK9BWzOKQ="
+  [mod."github.com/pkg/errors"]
+    version = "v0.9.1"
+    hash = "sha256-mNfQtcrQmu3sNg/7IwiieKWOgFQOVVe2yXgKBpe/wZw="
+  [mod."github.com/pmezard/go-difflib"]
+    version = "v1.0.0"
+    hash = "sha256-/FtmHnaGjdvEIKAJtrUfEhV7EVo5A/eYrtdnUkuxLDA="
+  [mod."github.com/russross/blackfriday/v2"]
+    version = "v2.1.0"
+    hash = "sha256-R+84l1si8az5yDqd5CYcFrTyNZ1eSYlpXKq6nFt4OTQ="
+  [mod."github.com/sirupsen/logrus"]
+    version = "v1.9.3"
+    hash = "sha256-EnxsWdEUPYid+aZ9H4/iMTs1XMvCLbXZRDyvj89Ebms="
+  [mod."github.com/stretchr/objx"]
+    version = "v0.5.0"
+    hash = "sha256-nY4mvP0f0Ry1IKMKQAYNuioA5h4red4mmQqeGZw6EF0="
+  [mod."github.com/stretchr/testify"]
+    version = "v1.8.4"
+    hash = "sha256-MoOmRzbz9QgiJ+OOBo5h5/LbilhJfRUryvzHJmXAWjo="
+  [mod."github.com/urfave/cli"]
+    version = "v1.22.12"
+    hash = "sha256-FTdBlhQvyDhgrDcSJDxgSLS/cBSP8B1BC/AxGA9Lyss="
+  [mod."golang.org/x/mod"]
+    version = "v0.12.0"
+    hash = "sha256-M/oXnzm7odpJdQzEnG6W0pNYtl0uhOM/l7qgfGVpU2M="
+  [mod."golang.org/x/net"]
+    version = "v0.15.0"
+    hash = "sha256-k0hgSwNmZz9nN9cqqACNHdnejV50AAwzxnoyTs9liXw="
+  [mod."golang.org/x/sync"]
+    version = "v0.3.0"
+    hash = "sha256-bCJKLvwExhYacH2ZrWlZ38lr1d6oNenNt2m1QqDCs0o="
+  [mod."golang.org/x/sys"]
+    version = "v0.12.0"
+    hash = "sha256-Ht/PhBJGWNBg4ksmdUu4+7hJjFypSwoUN/8DJricd+0="
+  [mod."golang.org/x/time"]
+    version = "v0.1.0"
+    hash = "sha256-9tbFLEh3MbhbDxU3vw763vf8ppsZicpfAbo5V4PslLE="
+  [mod."golang.org/x/tools"]
+    version = "v0.13.0"
+    hash = "sha256-OCgLOwia8fNHxfdogXVApf0/qK6jE2ukegOx7lkOzfo="
+  [mod."gopkg.in/check.v1"]
+    version = "v1.0.0-20200227125254-8fa46927fb4f"
+    hash = "sha256-nGV66SlDrpDfhkzlr9h52JybsCioW3ix5bKmbkEfoDs="
+  [mod."gopkg.in/yaml.v3"]
+    version = "v3.0.1"
+    hash = "sha256-FqL9TKYJ0XkNwJFnq9j0VvJ5ZUU1RvH/52h/f5bkYAU="
+  [mod."gotest.tools/v3"]
+    version = "v3.0.2"
+    hash = "sha256-R9KZ5NexCr9mexcjZhPlhRy+cx2d19vGD7hQ9xfFy/4="