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* SysTools
* Parser
* GHC.Builtin
* GHC.Iface.Recomp
* Settings
Update Haddock submodule
Metric Decrease:
Naperian
parsing001
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Not only is this a reasonable efficiency measure but it avoids making
reentrant calls into ncurses, which is not thread-safe. See #17922.
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The combinator andM is used only once, and the code is shorter and
simpler if you inline it.
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`SysTools.Terminal.queryCygwinTerminal` now exists in the `Win32`
library under the name `isMinTTYHandle` since `Win32-2.5.0.0`.
(GHC 8.4.4 ships with `Win32-2.6.1.0`, so this is well within GHC's
support window.) We can therefore get replace `queryCygwinTerminal`
with `isMinTTYHandle` and delete quite a bit of code from
`SysTools.Terminal` in the process.
Along the way I needed to replace some uses of `#if defined x` with
`#if defined(x)` to please the CI linters.
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This switches the compiler/ component to get compiled with
-XNoImplicitPrelude and a `import GhcPrelude` is inserted in all
modules.
This is motivated by the upcoming "Prelude" re-export of
`Semigroup((<>))` which would cause lots of name clashes in every
modulewhich imports also `Outputable`
Reviewers: austin, goldfire, bgamari, alanz, simonmar
Reviewed By: bgamari
Subscribers: goldfire, rwbarton, thomie, mpickering, bgamari
Differential Revision: https://phabricator.haskell.org/D3989
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The previous detection mechanism allowed environment variables (ANSICON,
ConEmuANSI, TERM) to supersede the fact that the stderr is not a
terminal, which is probably what led to color codes appearing in the
stderr of the tests (see: 847d229346431483b99adcff12e46c7bf6af15da).
This commit changes the detection mechanism to detect Cygwin/MSYS2
terminals in a more reliable manner, avoiding the use of environment
variables entirely.
Test Plan: validate
Reviewers: Phyx, austin, erikd, bgamari
Reviewed By: Phyx, bgamari
Subscribers: RyanGlScott, thomie
Differential Revision: https://phabricator.haskell.org/D2809
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