build images from flake

.github/workflows/build.yml

@@ -6,12 +6,6 @@ on:
     - cron:  '51 2 * * 0'
 jobs:
   images:
-    strategy:
-      fail-fast: false
-      matrix:
-        tag:
-          - nixos-22.11
-          - nixos-unstable
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
@@ -19,6 +13,6 @@ jobs:
       with:
         nix_path: nixpkgs=https://github.com/NixOS/nixpkgs/archive/nixpkgs-unstable.tar.gz
     - name: Build image
-      run: ./build-images.sh "${{matrix.tag}}"
+      run: ./build-images.sh
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

build-images.sh

@@ -1,12 +1,12 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -p nixos-generators -p nix -p coreutils -p bash -p gh -i bash
+#!nix-shell -p nix -p coreutils -p bash -p gh -i bash
 # shellcheck shell=bash
 set -xeuo pipefail
 shopt -s lastpipe
 
 build_netboot_image() {
   declare -r tag=$1 arch=$2 tmp=$3
-  img=$(nix-build --no-out-link -I "nixpkgs=https://github.com/NixOS/nixpkgs/archive/${tag}.tar.gz" '<nixpkgs/nixos/release.nix>' -A "netboot.$arch")
+  img=$(nix build --print-out-paths --option accept-flake-config true -L ".#packages.${arch}.netboot-${tag//.}")
   ln -s "$img/bzImage" "$tmp/bzImage-$arch"
   echo "$tmp/bzImage-$arch"
   ln -s "$img/initrd" "$tmp/initrd-$arch"
@@ -19,12 +19,9 @@ build_netboot_image() {
   echo "$tmp/netboot-$arch.ipxe"
 }
 
-
 build_kexec_installer() {
   declare -r tag=$1 arch=$2 tmp=$3
-  # run the test once we have kvm support in github actions
-  # ignore=$(nix-build ./nix/kexec-installer/test.nix -I "nixpkgs=https://github.com/NixOS/nixpkgs/archive/${tag}.tar.gz" --argstr system "$arch")
-  out=$(nix-build '<nixpkgs/nixos>' -o "$tmp/kexec-installer-$arch" -I nixos-config=./nix/kexec-installer/module.nix -I "nixpkgs=https://github.com/NixOS/nixpkgs/archive/${tag}.tar.gz" --argstr system "$arch" -A config.system.build.kexecTarball)
+  out=$(nix build --print-out-paths --option accept-flake-config true -L ".#packages.${arch}.kexec-installer-${tag//.}")
   echo "$out/nixos-kexec-installer-$arch.tar.gz"
 }
 
@@ -34,7 +31,6 @@ main() {
   trap 'rm -rf -- "$tmp"' EXIT
   (
     build_kexec_installer "$tag" "$arch" "$tmp"
-    build_kexec_bundle "$tag" "$arch" "$tmp"
     build_netboot_image "$tag" "$arch" "$tmp"
   ) | readarray -t assets
   for asset in "${assets[@]}"; do

flake.nix

@@ -14,9 +14,12 @@
   outputs = { self, nixos-unstable, nixos-2211 }: {
     packages.x86_64-linux = let
       netboot = nixpkgs: (import (nixpkgs + "/nixos/release.nix") {}).netboot.x86_64-linux;
+      kexec-installer = nixpkgs: (nixpkgs.legacyPackages.x86_64-linux.nixos [self.nixosModules.kexec-installer]).config.system.build.kexecTarball;
     in {
-      netboot-unstable = netboot nixos-unstable;
-      netboot-2211 = netboot nixos-2211;
+      netboot-nixos-unstable = netboot nixos-unstable;
+      netboot-nixos-nixos-2211 = netboot nixos-2211;
+      kexec-installer-nixos-unstable = kexec-installer nixos-unstable;
+      kexec-installer-nixos-2211 = kexec-installer nixos-2211;
     };
     nixosModules.kexec-installer = import ./nix/kexec-installer/module.nix;
     checks.x86_64-linux = {