name: env-probe

on:
  push:
    branches: ["ci/**"]
    paths:
      - ".gitea/workflows/env-probe.yml"
  workflow_dispatch:

jobs:
  probe:
    runs-on: ubuntu24.04-x64-lean4.35
    timeout-minutes: 15
    steps:
      - name: Who and where
        run: |
          echo "runner=${RUNNER_NAME:-unknown} labels=${RUNNER_LABELS:-unknown}"
          uname -a; id; cat /etc/os-release | head -4
          echo "in-container: $(test -f /.dockerenv && echo yes || echo no)"
          nproc; free -h; df -h / /tmp 2>/dev/null
      - name: Lean toolchain
        run: |
          echo "PATH=$PATH"; echo "ELAN_HOME=${ELAN_HOME:-unset} HOME=$HOME"
          for t in elan lean lake python3 pip3 git node npm docker curl jq sqlite3 gcc; do printf '%-8s ' $t; (command -v $t && $t --version 2>&1 | head -1) || echo MISSING; done
          ls -d "$HOME/.elan" /opt/elan /usr/local/elan 2>/dev/null || true
          (elan toolchain list || true) 2>&1 | head
      - name: Mathlib present anywhere?
        run: |
          (find / -maxdepth 4 \( -name 'lake-manifest.json' -o -name '.lake' \) -not -path '/proc/*' 2>/dev/null | head -20) || true
          (docker images 2>&1 | head -20) || true
          (docker ps -a 2>&1 | head -10) || true