wip

shell.nix

@@ -0,0 +1,40 @@
+let
+  _pkgs = import <nixpkgs> {};
+in
+  {
+    pkgs ?
+      import (_pkgs.fetchFromGitHub {
+        owner = "NixOS";
+        repo = "nixpkgs";
+        #branch@date: nixpkgs-unstable@2023-01-03
+        rev = "298add347c2bbce14020fcb54051f517c391196b";
+        sha256 = "0q0c6gf21rbfxvb9fvcmybvz9fxskbk324xbvqsh1dz2wzgylrja";
+      }) {},
+  }:
+    (pkgs.buildFHSUserEnv {
+      name = "heads-build-env";
+      targetPkgs = pkgs: (with pkgs; [
+        bison # Generate flashmap descriptor parser
+        curl
+        flex
+        git
+        gnat11 # gcc with ada
+        gnumake
+        m4
+        ncurses # make menuconfig
+        nss # ca-certs
+        perl
+        pkgconfig
+        qemu # test the image
+        wget
+        which
+        zlib.dev
+      ]);
+      runScript = ''
+        #!/usr/bin/env bash
+        unset NIX_SSL_CERT_FILE
+        unset SSL_CERT_FILE
+        bash
+      '';
+    })
+    .env