chore(nix): add package derivation (#5)

Author: loicsikidi

.goreleaser.yaml

@@ -113,3 +113,4 @@ changelog:
     exclude:
       - '^docs'
       - '^test'
+      - '^chore' 

default.nix

@@ -0,0 +1,10 @@
+{
+  pkgs ? import <nixpkgs> {},
+  isUnstable ? false,
+}:
+pkgs.callPackage ./nix/package.nix {
+  src =
+    if isUnstable
+    then pkgs.lib.cleanSource ./.
+    else null;
+}

nix/package.nix

@@ -0,0 +1,67 @@
+{
+  lib,
+  stdenv,
+  buildGo125Module,
+  fetchFromGitHub,
+  installShellFiles,
+  src ? null,
+}: let
+  version =
+    if src != null
+    then "unstable"
+    else "0.1.1";
+in
+  buildGo125Module {
+    pname = "tpm-trust";
+    inherit version;
+
+    src =
+      if src != null
+      then src
+      else
+        fetchFromGitHub {
+          owner = "loicsikidi";
+          repo = "tpm-trust";
+          tag = "v${version}";
+          hash = "sha256-w6CVs8huAhlkYiA7a6dY4WsF3Ri5puW494rq9mnpmjY=";
+        };
+
+    vendorHash = "sha256-yuqq485vIO+EI05RzjEFX2L2Mtp6gS3pi8RK3gmeUu0=";
+
+    # Build the main package (at the root)
+    # subPackages defaults to [ "." ] if not specified
+
+    ldflags = [
+      "-s"
+      "-w"
+      "-X main.version=${version}"
+      "-X main.builtBy=nix"
+    ];
+
+    doCheck = true;
+
+    checkFlags = [
+      "-v"
+      "-timeout=30s"
+    ];
+
+    nativeBuildInputs = [installShellFiles];
+
+    postInstall =
+      lib.optionalString
+      (stdenv.buildPlatform.canExecute stdenv.hostPlatform) ''
+        # Generate shell completions
+        installShellCompletion --cmd tpm-trust \
+          --bash <($out/bin/tpm-trust completion bash) \
+          --zsh <($out/bin/tpm-trust completion zsh) \
+          --fish <($out/bin/tpm-trust completion fish)
+      '';
+
+    meta = {
+      description = "TPM Trust Bundle - manages TPM root certificates bundle";
+      homepage = "https://github.com/loicsikidi/tpm-trust";
+      license = lib.licenses.bsd3;
+      maintainers = [];
+      mainProgram = "tpm-trust";
+    };
+  }