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| author | sternenseemann <sternenseemann@systemli.org> | 2022-07-24 11:41:11 +0200 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2022-07-26 16:26:53 -0400 |
| commit | 42147534320f9ac22f16ffc226148ae553337d2e (patch) | |
| tree | fcf235b7e28c24f957a79ac23ea2958dcf9ed306 /hadrian/hadrian.cabal | |
| parent | 25c24535ad51aa22b9cae425c6ac4ad9a8f1e1e9 (diff) | |
| download | haskell-42147534320f9ac22f16ffc226148ae553337d2e.tar.gz | |
hadrian: add flag disabling selftest rules which require QuickCheck
The hadrian executable depends on QuickCheck for building, meaning this
library (and its dependencies) will need to be built for bootstrapping
GHC in the future. Building QuickCheck, however, can require
TemplateHaskell. When building a statically linking GHC toolchain,
TemplateHaskell can be tricky to get to work, and cross-compiling
TemplateHaskell doesn't work at all without -fexternal-interpreter,
so QuickCheck introduces an element of fragility to GHC's bootstrap.
Since the selftest rules are the only part of hadrian that need
QuickCheck, we can easily eliminate this bootstrap dependency when
required by introducing a `selftest` flag guarding the rules' inclusion.
Closes #8699.
Diffstat (limited to 'hadrian/hadrian.cabal')
| -rw-r--r-- | hadrian/hadrian.cabal | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/hadrian/hadrian.cabal b/hadrian/hadrian.cabal index da0aa4daab..c37974914a 100644 --- a/hadrian/hadrian.cabal +++ b/hadrian/hadrian.cabal @@ -24,6 +24,14 @@ flag threaded which don't support the threaded runtime should disable this flag. +-- See also #21913 +flag selftest + manual: True + default: True + description: Enables the hadrian selftest rules which require + QuickCheck. Disabling it thus saves on a few dependencies + which can be problematic when bootstrapping. + executable hadrian main-is: Main.hs hs-source-dirs: . @@ -82,7 +90,6 @@ executable hadrian , Rules.Program , Rules.Register , Rules.Rts - , Rules.Selftest , Rules.SimpleTargets , Rules.SourceDist , Rules.Test @@ -141,7 +148,6 @@ executable hadrian other-extensions: MultiParamTypeClasses , TypeFamilies build-depends: Cabal >= 3.2 && < 3.7 - , QuickCheck >= 2.6 && < 2.15 , base >= 4.8 && < 5 , bytestring >= 0.10 && < 0.12 , containers >= 0.5 && < 0.7 @@ -169,3 +175,8 @@ executable hadrian -- time tends to eat any benefit. "-with-rtsopts=-I0 -qg" -threaded + + if flag(selftest) + other-modules: Rules.Selftest + cpp-options: -DHADRIAN_ENABLE_SELFTEST + build-depends: QuickCheck >= 2.6 && < 2.15 |