Make the pool's invariant the default, and stop the library killing i… #42
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| name: CI | |
| # THE BUILD TOOL IS NAMED HERE AND NOWHERE ELSE. | |
| # | |
| # This workflow used to install it through `.xlings.json', a workspace pin that | |
| # `actions/checkout' places in the working directory before anything else runs. | |
| # Two consequences followed and neither was visible in a passing log: | |
| # | |
| # * every `mcpp' invocation in this repository resolved to the pinned version | |
| # rather than to the one the job had installed, because that pin is read | |
| # from the current directory; | |
| # * the pin named 0.0.13, from 2026-05. The index no longer serves the | |
| # toolchain packages a build tool of that age asks for, so `mcpp build' | |
| # ended at `package 'xim:glibc@>=2.39' not found' before compiling a line. | |
| # | |
| # The pin file is removed. The version is an environment variable, so the two | |
| # places that need it, the install and the cache, cannot drift apart again. | |
| on: | |
| push: | |
| branches: [master] | |
| pull_request: | |
| # A CANARY, BECAUSE THIS ROTTED WHERE NOTHING WOULD LOOK. | |
| # | |
| # The breakage above occurred between 2026-07-11 and 2026-08-29 and nothing | |
| # reported it: master received no pushes in that window, so the first run to | |
| # meet it was a contributor's pull request, whose author had no way to | |
| # distinguish a broken environment from a broken change. | |
| schedule: | |
| - cron: '0 6 * * 1' | |
| workflow_dispatch: | |
| env: | |
| MCPP_VERSION: 2026.8.29.1 | |
| XLINGS_VERSION: v2026.8.17.2 | |
| XLINGS_NON_INTERACTIVE: '1' | |
| jobs: | |
| build: | |
| name: build + test (linux x86_64, mcpp) | |
| runs-on: ubuntu-latest | |
| timeout-minutes: 45 | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Install xlings | |
| run: | | |
| # --retry-all-errors and not --retry alone: the first covers a | |
| # transient HTTP status and a timeout, and what this step actually | |
| # meets is a failure of the transport. Observed in this ecosystem as | |
| # `curl: (35) Recv failure: Connection reset by peer', thirteen | |
| # seconds into a job, before anything was built. | |
| curl -fsSL --retry 3 --retry-all-errors --retry-delay 2 \ | |
| https://raw.githubusercontent.com/openxlings/xlings/main/tools/other/quick_install.sh \ | |
| | bash -s "$XLINGS_VERSION" | |
| echo "$HOME/.xlings/subos/current/bin" >> "$GITHUB_PATH" | |
| - name: Install mcpp | |
| run: | | |
| xlings update | |
| xlings install "mcpp@$MCPP_VERSION" -y -g | |
| # The version this job runs is the version it prints. A pin that is | |
| # not read is the failure this file exists to stop repeating. | |
| mcpp --version | |
| # A runner outside China reaches the mirrors this names. The CN set is | |
| # for a developer's machine and is slower or unreachable from here. | |
| mcpp self config --mirror GLOBAL | |
| # The toolchain mcpp bootstraps is decided by the version pinned above, so | |
| # that version is the whole of the key. | |
| - name: Cache mcpp sandbox | |
| uses: actions/cache@v4 | |
| with: | |
| path: ~/.xlings/data/xpkgs/xim-x-mcpp/${{ env.MCPP_VERSION }}/registry | |
| key: mcpp-sandbox-${{ runner.os }}-mcpp${{ env.MCPP_VERSION }} | |
| - name: Build with mcpp | |
| run: mcpp build | |
| # Most of these are hermetic: `test_framing` needs nothing, and `test_pool` | |
| # scripts its own TLS server on 127.0.0.1. The eight in `test_download` | |
| # and `test_resolver` reach httpbin.org and one.one.one.one; a network | |
| # failure among them is distinguishable in the log by the endpoint it | |
| # names. | |
| - name: Run tests | |
| run: mcpp test | |
| # A TEMPLATE IS PART OF THE RELEASE THAT SHIPS IT, AND `mcpp new` CAN ONLY | |
| # REACH ONE THAT IS ALREADY PUBLISHED. Checking them after the release | |
| # makes the first person to run `mcpp new` the one who finds out they do | |
| # not compile, so this renders them the way the scaffolder does and builds | |
| # them against this commit. It has already caught one: `import std` | |
| # carries no `stdout` macro, so a progress bar flushed through it did not | |
| # compile in a generated project while compiling fine in this repository. | |
| - name: Smoke-test the project templates | |
| run: bash tools/template_smoke.sh | |
| # ── The same sources, on a different kernel ABI ────────────────────────────── | |
| # | |
| # WHY THIS IS A SEPARATE JOB AND NOT A STEP. It resolves a different toolchain | |
| # (llvm rather than gcc) and a different everything below the program — musl | |
| # ported onto openkal, libc++ configured for that musl, and openkal-linux | |
| # beneath both. Sharing a job would mean sharing a cache key between two | |
| # stacks that have nothing in common but the source tree. | |
| # | |
| # WHAT IT CATCHES THAT THE JOB ABOVE CANNOT. `Socket::write` sends with | |
| # MSG_NOSIGNAL and `connect_addrinfo` sets SO_NOSIGPIPE, and which of those | |
| # exists is decided by the C library rather than by the operating system — | |
| # openkal-musl defines the first and not the second. A `#ifdef` that is wrong | |
| # about that compiles cleanly here and fails there, which is exactly how | |
| # 5e7d66f reached master. | |
| openkal: | |
| name: build + run (linux x86_64, above openkal) | |
| runs-on: ubuntu-latest | |
| timeout-minutes: 45 | |
| steps: | |
| - uses: actions/checkout@v4 | |
| - name: Install xlings | |
| run: | | |
| curl -fsSL --retry 3 --retry-all-errors --retry-delay 2 \ | |
| https://raw.githubusercontent.com/openxlings/xlings/main/tools/other/quick_install.sh \ | |
| | bash -s "$XLINGS_VERSION" | |
| echo "$HOME/.xlings/subos/current/bin" >> "$GITHUB_PATH" | |
| - name: Install mcpp | |
| run: | | |
| xlings update | |
| xlings install "mcpp@$MCPP_VERSION" -y -g | |
| mcpp --version | |
| mcpp self config --mirror GLOBAL | |
| - name: Cache mcpp sandbox | |
| uses: actions/cache@v4 | |
| with: | |
| path: ~/.xlings/data/xpkgs/xim-x-mcpp/${{ env.MCPP_VERSION }}/registry | |
| key: mcpp-openkal-${{ runner.os }}-mcpp${{ env.MCPP_VERSION }} | |
| # The example builds the library from this checkout (`path = "../.."`) and | |
| # takes the stack beneath it from the index, so what is tested is this | |
| # commit against the published openkal packages. | |
| # | |
| # It makes one HTTPS request and reports "no network" rather than failing | |
| # when there is none, so a runner without egress reports "not run" instead | |
| # of "broken". The build, the link and the framing parsers are checked | |
| # either way. | |
| - name: Build and run above openkal | |
| working-directory: examples/openkal | |
| run: mcpp run |