add diskco pkg

pkgs/disko/scripts/create-release.nix

@@ -0,0 +1,18 @@
+{
+  lib,
+  writeShellApplication,
+  bash,
+  coreutils,
+  git,
+  nix-fast-build,
+}:
+writeShellApplication {
+  name = "create-release";
+  runtimeInputs = [
+    bash
+    git
+    coreutils
+    nix-fast-build
+  ];
+  text = lib.readFile ./create-release.sh;
+}

pkgs/disko/scripts/create-release.sh

@@ -0,0 +1,65 @@
+# Don't run directly! Instead, use
+# nix run .#create-release
+
+version=${1:-}
+if [[ -z "$version" ]]; then
+  echo "USAGE: nix run .#create-release -- <version>" >&2
+  exit 1
+fi
+
+# Check if we're running from the root of the repository
+if [[ ! -f "flake.nix" || ! -f "version.nix" ]]; then
+  echo "This script must be run from the root of the repository" >&2
+  exit 1
+fi
+
+# Check if the version matches the semver pattern (without suffixes)
+semver_regex="^([0-9]+)\.([0-9]+)\.([0-9]+)$"
+if [[ ! "$version" =~ $semver_regex ]]; then
+  echo "Version must match the semver pattern (e.g., 1.0.0, 2.3.4)" >&2
+  exit 1
+fi
+
+if [[ "$(git symbolic-ref --short HEAD)" != "master" ]]; then
+  echo "must be on master branch" >&2
+  exit 1
+fi
+
+# Ensure there are no uncommitted or unpushed changes
+uncommited_changes=$(git diff --compact-summary)
+if [[ -n "$uncommited_changes" ]]; then
+  echo -e "There are uncommited changes, exiting:\n${uncommited_changes}" >&2
+  exit 1
+fi
+git pull git@github.com:nix-community/disko master
+unpushed_commits=$(git log --format=oneline origin/master..master)
+if [[ "$unpushed_commits" != "" ]]; then
+  echo -e "\nThere are unpushed changes, exiting:\n$unpushed_commits" >&2
+  exit 1
+fi
+
+# Run all tests to ensure we don't release a broken version
+# Two workers are safe on systems with at least 16GB of RAM
+nix-fast-build --no-link -j 2 --eval-workers 2 --flake .#checks
+
+# Update the version file
+echo "{ version = \"$version\"; released = true; }" > version.nix
+
+# Commit and tag the release
+git commit -am "release: v$version"
+git tag -a "v$version" -m "release: v$version"
+git tag -d "latest"
+git tag -a "latest" -m "release: v$version"
+
+# a revsion suffix when run from the tagged release commit
+echo "{ version = \"$version\"; released = false; }" > version.nix
+git commit -am "release: reset released flag"
+
+echo "Release was prepared successfully!"
+echo "To push the release, run the following command:"
+echo
+echo "  git push origin master v$version && git push --force origin latest"
+echo
+echo "After that, create a release on GitHub:"
+echo
+echo "  https://github.com/nix-community/disko/releases/new"