Create personalized bootstrap ISO

.github/workflows/iso.yml

@@ -0,0 +1,30 @@
+name: "Build personalized bootstrap ISO"
+on:
+  push:
+    branches:
+      - master
+      - develop
+jobs:
+  build-iso:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: cachix/install-nix-action@v16
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - name: Build ISO
+        id: build-iso
+        # TODO: Use the registry.
+        run: |
+          nix run github:nix-community/nixos-generators/296067b9c7a172d294831dec89d86847f30a7cfc -- --flake .#bootstrap --format iso --out-link result
+      - name: Create release
+        id: create-release
+        uses: marvinpinto/action-automatic-releases@v1.2.1
+        with:
+          repo_token: "${{ secrets.GITHUB_TOKEN }}"
+          automatic_release_tag: latest
+          prerelease: true
+          title: Pre-release development
+          files:
+            result/iso/bootstrap-*.iso
+

README.adoc

@@ -121,7 +121,7 @@ In order of priority:
 
 * [x] Create custom modules.
 * [x] Create a themes system similar to link:https://github.com/hlissner/dotfiles[this NixOS config].
-* [ ] Create a good workflow for creating ISOs.
+* [x] Create a good workflow for creating ISOs.
 * [x] Create development shells.
 * [x] Manage secrets with agenix.
 * [ ] Create a good workflow for tests.

hosts/bootstrap/README.adoc

@@ -0,0 +1,16 @@
+= bootstrap, the NixOS installation medium
+
+My personalized NixOS installation medium.
+It is not supposed to be used as a daily system (if you are, you're pretty weird :/).
+
+This is based from how devos link:https://github.com/divnix/digga/blob/760bb9c29063258ba547145de0ab96acd7eba4c0/modules/bootstrap-iso.nix[generates their ISO].
+You can also see link:https://nix.dev/tutorials/building-bootable-iso-image[an example from nix.dev].
+
+To make use of this, you can generate an ISO through link:https://github.com/nix-community/nixos-generators[nixos-generators]. footnote:[You can also try this for other hosts as well for MORE BEEFY OFFLINE INSTALLATION MEDIUM!]
+
+[source, shell]
+----
+nix run github:nix-community/nixos-generators -- --flake .#bootstrap --format iso --out-link result
+----
+
+With the ISO built, you can now use it for yourself for whatever reason.

hosts/bootstrap/default.nix

@@ -0,0 +1,75 @@
+{ self, lib, config, pkgs, inputs, modulesPath, ... }:
+
+{
+  imports = [
+    "${modulesPath}/installer/cd-dvd/installation-cd-minimal.nix"
+  ];
+
+  isoImage = {
+    isoBaseName = "bootstrap-${config.networking.hostName}";
+    contents = [{
+      source = self;
+      target = "/bootstrap/";
+    }];
+    storeContents = [
+      self.devShell.${config.nixpkgs.system}
+    ] ++ builtins.attrValues inputs;
+  };
+
+  networking.hostName = "bootstrap";
+  boot.supportedFilesystems = lib.mkForce [ "btrfs" "reiserfs" "vfat" "f2fs" "xfs" "ntfs" "cifs" ];
+
+  nix = {
+    gc.automatic = true;
+    optimise.automatic = true;
+
+    # Please see `nix-conf.5` manual for more details.
+    settings = {
+      # All to make improvement for using Nix.
+      trusted-users = [ "root" "@wheel" ];
+      allow-import-from-derivation = true;
+      allow-dirty = true;
+      auto-optimise-store = true;
+      sandbox = true;
+
+      # Set several binary caches.
+      substituters = [
+        "https://cache.nixos.org/"
+        "https://nix-community.cachix.org"
+        "https://foo-dogsquared.cachix.org"
+      ];
+      trusted-public-keys = [
+        "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+        "foo-dogsquared.cachix.org-1:/2fmqn/gLGvCs5EDeQmqwtus02TUmGy0ZlAEXqRE70E="
+      ];
+    };
+  };
+
+  users.users = {
+    root.password = "";
+
+    nixos = {
+      password = "nixos";
+      description = "default";
+      isNormalUser = true;
+      extraGroups = [ "wheel" ];
+    };
+  };
+
+  environment.systemPackages = with pkgs; [
+    binutils
+    coreutils
+    moreutils
+    whois
+    jq
+    git
+    manix
+
+    # The coreutils replacement.
+    ripgrep
+    fd
+    bat
+  ];
+
+  boot.loader.systemd-boot.enable = true;
+}