Big +1 on this. There area few experiments I'd like try with Happy that
I think this will help with, too.
On 8/2/20 4:18 AM, Moritz Angermann wrote:
This dependency on alex and happy to boot ghc has been annoying, but
wasn't that terrible until a while ago when some
ghc versions needed happy <= 1.19.11 and others happy >= 1.19.12. If
happy was part of ghc, this would not have been an issue.
As such I'd be on board with adding happy *and* alex as submodules
into the `utils` folder. And thereby reducing the external
boot dependencies of ghc!
I believe
- `compiler/ghc.cabal.in` would need to get a `build-tool-depends:`
stanza for happy and alex,
- `utils/genprimopcode/genprimopcode.cabal` same
- `utils/hpc/hpc-bin.cabal` same for happy only.
For `hadrian`, you'd need to make it aware of happy and alex packages
in `hadrian/src/Packages.hs`.
(Just follow other "util"s in there, e.g. unlit or touchy).
In general hadrian should follow cabal dependencies properly.
cheers,
Moritz
On Sun, Aug 2, 2020 at 3:43 PM Vladislav Zavialov <vladis...@serokell.io> wrote:
Hi ghc-devs,
I’m working on the unification of parsers for terms and types, and one of the
things I’d really like to make use of is a feature I implemented in ‘happy’ in
October 2019 (9 months ago):
https://github.com/simonmar/happy/pull/153
It’s been merged upstream, but there has been no release of ‘happy’, despite
repeated requests:
1. I asked for a release in December:
https://github.com/simonmar/happy/issues/164
2. Ben asked for a release a month ago:
https://github.com/simonmar/happy/issues/168
I see two solutions here:
a) Find a co-maintainer for ‘happy’ who could make releases more frequently
(I understand the current maintainers probably don’t have the time to do it).
b) Use a development snapshot of ‘happy’ in GHC
Maybe we need to do both, but one reason I’d like to see (b) in particular
happen is that I can imagine introducing more features to ‘happy’ for use in
GHC, and it’d be nice not to wait for a release every time. For instance, there
are some changes I’d like to make to happy/alex in order to implement #17750
So here are two questions I have:
1. Are there any objections to this idea?
2. If not, could someone more familiar with the build process guide me as to
how this should be implemented? Do I add ‘happy’ as a submodule and change
something in the ./configure script, or is there more to it? Do I need to
modify make/hadrian, and if so, then how?
Thanks,
- Vlad
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