add ci script to parallize evaluation

.gitea/workflows/check.yaml

@@ -8,4 +8,4 @@ jobs:
     runs-on: nix
     steps:
       - uses: actions/checkout@v3
-      - run: nix flake check --keep-going -L
+      - run: bash ./scripts/ci

docs/secrets-management.md

@@ -0,0 +1,4 @@
+The clan cli provides a workflowq
+
+$ clan secrets users add joerg age17n64ahe3wesh8l8lj0zylf4nljdmqn28hvqns2g7hgm9mdkhlsvsjuvkxz
+$ clan secrets machines add web01 age17xuvz0fqtynzdmf8rfh4g3e46tx8w3mc6zgytrmuj5v9dhnldgxs7ue7ct

scripts/ci

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+args=(
+  "$@"
+  --accept-flake-config
+  --gc-roots-dir gc-root
+  --option allow-import-from-derivation false
+  --show-trace
+  --force-recurse
+  --workers "$(nproc)"
+  --flake ".#checks.x86_64-linux"
+)
+
+summary=summary.log
+
+if [[ -n "${GITHUB_STEP_SUMMARY-}" ]]; then
+  log() {
+    echo "$*" >> "$GITHUB_STEP_SUMMARY"
+  }
+else
+  log() {
+    echo "$*" > "$summary"
+  }
+fi
+
+rc=0
+
+for job in $(nix shell --inputs-from '.#' "nixpkgs#nix-eval-jobs" -c nix-eval-jobs "${args[@]}" | jq -r '. | @base64'); do
+  job=$(echo "$job" | base64 -d)
+  attr=$(echo "$job" | jq -r .attr)
+  echo "### $attr"
+  error=$(echo "$job" | jq -r .error)
+  if [[ $error != null ]]; then
+    log "### ❌ $attr"
+    log
+    log "<details><summary>Eval error:</summary><pre>"
+    log "$error"
+    log "</pre></details>"
+    rc=1
+  else
+    drvPath=$(echo "$job" | jq -r .drvPath)
+    if ! nix-store --option keep-going true --realize "$drvPath" 2>&1 | tee build-log.txt; then
+      log "### ❌ $attr"
+      log
+      log "<details><summary>Build error:</summary>last 50 lines:<pre>"
+      log "$(tail -n 50 build-log.txt)"
+      log "</pre></details>"
+      rc=1
+    else
+      log "### ✅ $attr"
+    fi
+    log
+    rm build-log.txt
+  fi
+done
+
+if [[ -f "$summary" ]]; then cat "$summary"; fi
+exit "$rc"