help validating a modified compiler?
lists at richarde.dev
Mon Oct 11 20:05:32 UTC 2021
Speaking for myself: I have not validated locally for quite a while. I just rely on CI. You can mark an MR as a "Draft" to avoid triggering a review.
Instead of validating locally, I tend to just run the testsuite on the built GHC. This can be done with hadrian/build test -j<however many processors you have>. (You might want --flavour=<xyz> and --freeze1 --freeze2 there, too, to prevent recompilation.) Then I leave it to CI to do the full job.
> On Oct 11, 2021, at 3:23 PM, Norman Ramsey <nr at cs.tufts.edu> wrote:
> I've made a minor change to GHC, and before submitting a PR, I'd like to
> validate the change. But I don't really know how to interpret the output
> of the `validate` script. Mine runs for about 40 minutes and then ends
> in an error:
> # We are installing wrappers to programs by searching corresponding
> # wrappers. If wrapper is not found, we are attaching the common wrapper
> # to it. This implementation is a bit hacky and depends on consistency
> # of program names. For hadrian build this will work as programs have a
> # consistent naming procedure.
> if [ -L wrappers/ghc ]; then echo "ghc is a symlink"; fi
> ghc is a symlink
> cp: target 'dir/bin/ghc' is not a directory
> make: *** [Makefile:197: install_wrappers] Error 1
> Executed in 39.60 mins fish external
> usr time 146.65 mins 0.00 millis 146.65 mins
> sys time 9.55 mins 1.60 millis 9.55 mins
> I'm in the process of trying `validate` on a fresh checkout, but at 40
> minutes per shot, I feel like I might be on the wrong track. Should I
> just create a merge request and rely on CI for the validation?
> Or do something else?
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