February 2022 - ghc-devs

ettiquette for changing an MR under review?
by Norman Ramsey 08 Feb '22

08 Feb '22

I have an MR currently under review. Review has already identified a change I need to make, and I have made it in my local repository. Do I push the change now, or do I wait for a more complete review? And if I push it now, do I force-push or do I push the changes as a separate commit? Norman

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Notes Linter
by Matthew Pickering 08 Feb '22

08 Feb '22

Hello, Just merged is a new linter which checks the consistency of notes. In particular it checks that all note references reference an existing Note. The linter is integrated into the testsuite so you can run the linter (without building GHC) by saying ./hadrian/build test --only=notes and can accept the new output of the linter by saying ./hadrian/build test --only=notes --test-accept But you should probably not need to do this and instead fix your note references! Any issues please open a ticket. Cheers, Matt

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9.2.2 release schedule?
by Shayne Fletcher 03 Feb '22

03 Feb '22

Anyone know of any scheduling plans for ghc-9.2.2? Happy holidays y'all :) -- Shayne Fletcher

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way to lint my GHC sources?
by Norman Ramsey 02 Feb '22

02 Feb '22

Is there a way for me to run the GHC linter on my GHC source tree, without having to push an MR out to CI? Norman

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use Hadrian to see if compiler compiles?
by Norman Ramsey 02 Feb '22

02 Feb '22

I'm currently doing some refactoring of the GHC sources, which involves moving definitions between modules. As a sanity check I want to compile often, so if I've broken anything (or have inadvertently created circular imports) I can find out quickly. I'm currently using ./hadrian/build -j but I really don't need to build libraries or a stage 2 compiler. I tried looking over `./hadrian/build --help`, but I'm not confident that I understand what's there. My best guess is ./hadrian/build -j stage0:lib:ghc Would that accomplish my goal? Norman

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White space in CI
by Simon Peyton Jones 01 Feb '22

01 Feb '22

Devs As you'll see from this pipeline record https://gitlab.haskell.org/ghc/ghc/-/merge_requests/7105/pipelines CI consistently fails once a single commit has trailing whitespace, even if it is fixed in a subsequent commit - dce2054d <https://gitlab.haskell.org/ghc/ghc/-/commit/dce2054d44ea60bdde6409050284fbb…> introduced trailing whitespace - 6411223c <https://gitlab.haskell.org/ghc/ghc/-/commit/6411223cd3977c92d01b09b55a455d8…> removed it again. - but all subsequent pipelines fail This came as a big surprise. It doesn't make sense to lint each individual commit. Let's just lint the final version! (I will squash them in due course, but I didn't want to lose my work-in-progress history.) Simon

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Re: downloading ghc head version
by Matthew Pickering 01 Feb '22

01 Feb '22

Right, it appears the problem was we stopped producing the deb9 bindists due to deb9 being EOL. https://gitlab.haskell.org/ghc/ghc/-/commit/871ce2a300ed35639a39a86f4c85fbc… Is your problem sorted now? Matt On Tue, Feb 1, 2022 at 12:09 AM Harendra Kumar <harendra.kumar(a)gmail.com> wrote: > > I replaced deb9 with deb10 in the URL that ghcup install was using > earlier in the CI and it seems to work. The following command > installed ghc successfully: > > $ ghcup install ghc -u > https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-d… > head > $ ghc-head --version > The Glorious Glasgow Haskell Compilation System, version 9.3.20220130 > > Maybe the deb9 build has been retired now? It worked once in our CI a > few days and then never worked. > > -harendra > > On Tue, 1 Feb 2022 at 05:24, Harendra Kumar <harendra.kumar(a)gmail.com> wrote: > > > > Ah, nice. That looks like a useful repo. Thanks! > > > > I tried the nix expression: > > > > nix run -f https://github.com/mpickering/ghc-artefact-nix/archive/master.tar.gz > > ghcHEAD > > > > on my debian linux, but it is trying to download the fedora tar from > > https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-f… > > . ghc-head-from.sh also downloads from the same link. Is it supposed > > to work on debian as well? The nix expression as well as > > ghc-head-from.sh finally failed with the followinf error on my > > machine: > > > > utils/ghc-cabal/dist-install/build/tmp/ghc-cabal: error while loading > > shared libraries: libstdc++.so.6: cannot open shared object file: No > > such file or directory > > > > I looked at https://github.com/mpickering/ghc-artefact-nix/blob/master/gitlab-artifact.…, > > but it does not seem to have a debian x86_64 config. > > > > -harendra > > > > On Tue, 1 Feb 2022 at 05:00, Matthew Pickering > > <matthewtpickering(a)gmail.com> wrote: > > > > > > I will look tomorrow but see where ghc-head-from gets the bindist from > > > > > > https://github.com/mpickering/ghc-artefact-nix/blob/master/ghc-head-from.sh > > > > > > On Mon, Jan 31, 2022 at 10:43 PM Harendra Kumar > > > <harendra.kumar(a)gmail.com> wrote: > > > > > > > > It seems the latest artifacts download link > > > > (https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/...) at GHC > > > > gitlab is not working. > > > > > > > > If this is not the right place to ask this, can someone point me to > > > > the right place? > > > > > > > > -harendra > > > > > > > > On Wed, 26 Jan 2022 at 18:38, Harendra Kumar <harendra.kumar(a)gmail.com> wrote: > > > > > > > > > > Hi, > > > > > > > > > > I am trying to set up a CI for ghc head version. I am not sure what is > > > > > the official supported method to install a nightly/head version of > > > > > GHC. haskell/actions/setup on github seems to support it via ghcup. > > > > > But it almost always fails, I saw it succeeding once till now. It > > > > > tries to download it from the following URL, but fails with 404 not > > > > > found: > > > > > > > > > > downloading: https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-d… > > > > > > > > > > I tried this link in the browser and I get the same error. Is that the > > > > > right way to install it? If not, can someone suggest a reliable way to > > > > > get the head version, other than building it myself? > > > > > > > > > > Thanks, > > > > > Harendra > > > > _______________________________________________ > > > > ghc-devs mailing list > > > > ghc-devs(a)haskell.org > > > > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs

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downloading ghc head version
by Harendra Kumar 31 Jan '22

31 Jan '22

Hi, I am trying to set up a CI for ghc head version. I am not sure what is the official supported method to install a nightly/head version of GHC. haskell/actions/setup on github seems to support it via ghcup. But it almost always fails, I saw it succeeding once till now. It tries to download it from the following URL, but fails with 404 not found: downloading: https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-d… I tried this link in the browser and I get the same error. Is that the right way to install it? If not, can someone suggest a reliable way to get the head version, other than building it myself? Thanks, Harendra

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