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View Code? Open in Web Editor NEWGHC API parse tree utilities
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Different Settings types?
Using GHC-9.0,1, ghc-lib-parser-9.0.2.20211226 and ghc-lib-parser-ex-9.0.0.6
Is there are a guide how to not run into problems like these?
• Couldn't match expected type ‘GHC.Settings.Settings’
with actual type ‘ghc-9.0.1:GHC.Settings.Settings’
NB: ‘GHC.Settings.Settings’
is defined in ‘GHC.Settings’
in package ‘ghc-lib-parser-9.0.2.20211226’
‘ghc-9.0.1:GHC.Settings.Settings’
is defined in ‘GHC.Settings’ in package ‘ghc-9.0.1’
and the code is
import GHC.Driver.Session (DynFlags, defaultDynFlags, xopt_set)
import Language.Haskell.GhclibParserEx.GHC.Settings.Config (fakeLlvmConfig, fakeSettings)
fakeDynFlags :: DynFlags
fakeDynFlags = defaultDynFlags fakeSettings fakeLlvmConfigIs there are a guide how to not run into problems like these?
I find it surprising that ghc-lib-parser-ex depends on ghc lib, it's ghc-lib-parser-ex! Do I need to replicate flag logic to depend on ghc lib myself too? duh.
Add `isSymbolRdrName`
See PR ndmitchell/hlint#1043 for details.
Build errors in v8.8.5.2
I'm seeing build errors when building ghc-lib-parser-ex 8.8.5.2 against ghc-lib-parser 8.8.2.20200205.
ghc_lib_parser_ex/v8_8_5_2/src/Language/Haskell/GhclibParserEx/DynFlags.hs:31:50: error:
• No instance for (Bounded Extension)
arising from a use of ‘minBound’
There are instances for similar types:
instance [safe] Bounded
ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type.Extension
-- Defined in ‘ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type’
• In the expression: minBound
In the expression: [minBound .. maxBound]
In a stmt of a list comprehension: x <- [minBound .. maxBound]
|
31 | where exts = Map.fromList [(show x, x) | x <- [minBound .. maxBound]]
| ^^^^^^^^
ghc_lib_parser_ex/v8_8_5_2/src/Language/Haskell/GhclibParserEx/DynFlags.hs:142:41: error:
• Couldn't match type ‘Extension’
with ‘ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type.Extension’
NB: ‘ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type.Extension’
is defined in ‘GHC.LanguageExtensions.Type’
in package ‘ghc-lib-parser-8.8.2.20200205’
‘Extension’
is defined in ‘GHC.LanguageExtensions.Type’
in package ‘ghc-boot-th-8.6.4’
Expected type: [ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type.Extension]
Actual type: [Extension]
• In the third argument of ‘foldl'’, namely ‘enable’
In the expression: foldl' xopt_set flags enable
In an equation for ‘flags'’: flags' = foldl' xopt_set flags enable
|
142 | let flags' = foldl' xopt_set flags enable
| ^^^^^^
ghc_lib_parser_ex/v8_8_5_2/src/Language/Haskell/GhclibParserEx/DynFlags.hs:143:44: error:
• Couldn't match type ‘Extension’
with ‘ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type.Extension’
NB: ‘ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type.Extension’
is defined in ‘GHC.LanguageExtensions.Type’
in package ‘ghc-lib-parser-8.8.2.20200205’
‘Extension’
is defined in ‘GHC.LanguageExtensions.Type’
in package ‘ghc-boot-th-8.6.4’
Expected type: [ghc-lib-parser-8.8.2.20200205:GHC.LanguageExtensions.Type.Extension]
Actual type: [Extension]
• In the third argument of ‘foldl'’, namely ‘disable’
In the expression: foldl' xopt_unset flags' disable
In an equation for ‘flags''’:
flags'' = foldl' xopt_unset flags' disable
|
143 | let flags'' = foldl' xopt_unset flags' disable
| ^^^^^^^
Remove deprecated modules
Remove GhclibParserEx.Parse.hs and GhclibParserEx.Outputable.hs when we get to up to 8.10.2.
Add 'impliedGFlags', 'impliedOffGFlags' and 'impliedXFlags' to 'DynFlags'
While we wait for MR #2654 to be merged upstream, provide the listed constants of the issue title in Language.Haskell.GhclibParserEx.DynFlags. When generally available, the implementations can be replaced by redirections to the GHC API. See ndmitchell/hlint#587 for the motivation.
Error when compiling with GHC 8.6.5 Windows
cbits\ghclib_api.h:28:10: error:
error: #error Unsupported GHC API version
# error Unsupported GHC API version
^~~~~
|
28 | # error Unsupported GHC API version
| ^
`gcc.exe' failed in phase `C pre-processor'. (Exit code: 1)
Need a GHC 9.2.1 release
Trying to compile with 9.2.1 fails:
Preprocessing library for ghc-lib-parser-ex-9.0.0.4..
Building library for ghc-lib-parser-ex-9.0.0.4..
[ 1 of 20] Compiling Language.Haskell.GhclibParserEx.Dump
[ 2 of 20] Compiling Language.Haskell.GhclibParserEx.Fixity
src/Language/Haskell/GhclibParserEx/Fixity.hs:213:11: error:
Not in scope: type constructor or class ‘FixityDirection’
|
213 | fixity :: FixityDirection -> Int -> [String] -> [(String, Fixity)]
| ^^^^^^^^^^^^^^^
src/Language/Haskell/GhclibParserEx/Fixity.hs:228:48: error:
Not in scope: data constructor ‘Fixity’
Perhaps you meant one of these:
variable ‘fixity’ (line 214),
variable ‘fdFixity’ (imported from GHC.Hs)
|
228 | f (L _ (SigD _ (FixSig _ (FixitySig _ ops (Fixity _ p dir))))) =
| ^^^^^^
Add Bounded DynFlags.Language
Would be great if this had a Bounded instance. Probably best upstream?
Fix a couple of things to make life easier for hlint
- Have
strToPatreturn anLPat GhcPs - Have
parseExpressionreturn aParseResult (LHsExpr GhcPs) - Have hlint call onto
readExtensionin those places where it defines it inline.
failed o build with ghc-9.0.1 - import od HsDumpAst
[ 44s] + ./Setup build -v
[ 44s] Component build order: library
[ 44s] /usr/bin/ghc-pkg init dist/package.conf.inplace
[ 44s] creating dist/build
[ 44s] creating dist/build/autogen
[ 44s] creating dist/build/autogen
[ 44s] Preprocessing library for ghc-lib-parser-ex-9.0.0.3..
[ 44s] Building library for ghc-lib-parser-ex-9.0.0.3..
[ 44s] creating dist/build
[ 44s] /usr/bin/ghc --make -fbuilding-cabal-package -O -static -dynamic-too -dynosuf dyn_o -dynhisuf dyn_hi -outputdir dist/build -odir dist/build -hidir dist/build -stubdir dist/build -i -idist/build -isrc -idist/build/autogen -idist/build/global-autogen -Idist/build/autogen -Idist/build/global-autogen -Idist/build -Icbits -Idist/build/cbits -optP-include -optPdist/build/autogen/cabal_macros.h -this-unit-id ghc-lib-parser-ex-9.0.0.3-7vv2xbG2Jdb5CGJuwY2m7Q -hide-all-packages -Wmissing-home-modules -no-user-package-db -package-db dist/package.conf.inplace -package-id base-4.15.0.0 -package-id bytestring-0.10.12.1 -package-id containers-0.6.4.1 -package-id ghc-9.0.1 -package-id ghc-boot-9.0.1 -package-id ghc-boot-th-9.0.1 -package-id uniplate-1.6.13-6yuzA7Q8NEEtlEJ9JXZaY -XHaskell2010 Language.Haskell.GhclibParserEx.Dump Language.Haskell.GhclibParserEx.Fixity Language.Haskell.GhclibParserEx.GHC.Settings.Config Language.Haskell.GhclibParserEx.GHC.Driver.Flags Language.Haskell.GhclibParserEx.GHC.Driver.Session Language.Haskell.GhclibParserEx.GHC.Hs Language.Haskell.GhclibParserEx.GHC.Hs.Expr Language.Haskell.GhclibParserEx.GHC.Hs.Pat Language.Haskell.GhclibParserEx.GHC.Hs.Types Language.Haskell.GhclibParserEx.GHC.Hs.Decls Language.Haskell.GhclibParserEx.GHC.Hs.Binds Language.Haskell.GhclibParserEx.GHC.Hs.ImpExp Language.Haskell.GhclibParserEx.GHC.Hs.ExtendInstances Language.Haskell.GhclibParserEx.GHC.Parser Language.Haskell.GhclibParserEx.GHC.Types.Name.Reader Language.Haskell.GhclibParserEx.GHC.Utils.Outputable Language.Haskell.GhclibParserEx.Config Language.Haskell.GhclibParserEx.Parse Language.Haskell.GhclibParserEx.Outputable Paths_ghc_lib_parser_ex -optc-O2 -optc-Wall '-optc-D_FORTIFY_SOURCE=2' -optc-fstack-protector-strong -optc-funwind-tables -optc-fasynchronous-unwind-tables -optc-fstack-clash-protection '-optc-Werror=return-type'
[ 44s] [ 1 of 20] Compiling Language.Haskell.GhclibParserEx.Dump ( src/Language/Haskell/GhclibParserEx/Dump.hs, dist/build/Language/Haskell/GhclibParserEx/Dump.o, dist/build/Language/Haskell/GhclibParserEx/Dump.dyn_o )
[ 44s]
[ 44s] src/Language/Haskell/GhclibParserEx/Dump.hs:23:1: error:
[ 44s] Could not find module ‘HsDumpAst’
[ 44s] Use -v (or `:set -v` in ghci) to see a list of the files searched for.
[ 44s] |
[ 44s] 23 | import HsDumpAst
[ 44s] | ^^^^^^^^^^^^^^^^
[ 44s] error: Bad exit status from /var/tmp/rpm-tmp.QOoMrn (%build)
[ 44s]
[ 44s]
Failure to compile with GHC 8.4
I get:
Failed to install ghc-lib-parser-8.10.1.20200324
Build log ( /home/travis/.cabal/logs/ghc-8.4.4/ghc-lib-parser-8.10.1.20200324-DD7WEZv1DLv8XvMI2yfjnH.log ):
cabal: Entering directory '/tmp/cabal-tmp-11429/ghc-lib-parser-8.10.1.20200324'
Configuring ghc-lib-parser-8.10.1.20200324...
Preprocessing library for ghc-lib-parser-8.10.1.20200324..
In file included from /usr/include/_G_config.h:15:0,
from /usr/include/libio.h:31,
from /usr/include/stdio.h:74,
from /opt/ghc/8.4.4/lib/ghc-8.4.4/include/rts/Flags.h:16,
from /opt/ghc/8.4.4/lib/ghc-8.4.4/include/Rts.h:191,
from InfoTable.hsc:8:
InfoTable.hsc: In function ‘main’:
/opt/ghc/8.4.4/lib/ghc-8.4.4/template-hsc.h:75:24: error: ‘struct StgInfoTable_’ has no member named ‘srt’
(long) offsetof (t, f));
^
InfoTable.hsc:41:5: note: in expansion of macro ‘hsc_peek’
/opt/ghc/8.4.4/lib/ghc-8.4.4/template-hsc.h:79:24: error: ‘StgInfoTable {aka struct StgInfoTable_}’ has no member named ‘srt’
(long) offsetof (t, f));
^
InfoTable.hsc:59:5: note: in expansion of macro ‘hsc_poke’
compiling dist/build/GHC/Exts/Heap/InfoTable_hsc_make.c failed (exit code 1)
From https://travis-ci.org/github/ndmitchell/hlint/jobs/668189975
Are we going to have to ditch GHC 8.4 support?
You should **explicitly** say in README / description that your package doesn't follow PVP
... which is sad, but I understand your constraints.
patToStr and VarPat
Should patToStr print the var if the input is a VarPat, so that patToStr . strToPar == id?
cabal file on hackage for 8.10.0.20 version depends on ghc = 9.0.*
Build error with stack (no cabal) and ghc-9.0.2
Hi, we are trying to add support for ghc-9.0.2 in hls here: haskell/haskell-language-server#2567
The cabal build of ghc-lib-parser-ex-9.0.0.6 is succesful but the stack one is failing with several errors like:
ghc-lib-parser-ex > /tmp/stack-f10fe8295758b94c/ghc-lib-parser-ex-9.0.0.6/src/Language/Haskell/GhclibParserEx/GHC/Settings/Config.hs:59:20: error:
ghc-lib-parser-ex > Ambiguous occurrence ‘PlatformMisc’
ghc-lib-parser-ex > It could refer to
ghc-lib-parser-ex > either ‘GHC.Settings.PlatformMisc’,
ghc-lib-parser-ex > imported from ‘GHC.Settings’ at src/Language/Haskell/GhclibParserEx/GHC/Settings/Config.hs:19:1-19
ghc-lib-parser-ex > (and originally defined in ‘ghc-boot-9.0.2:GHC.Platform’)
ghc-lib-parser-ex > or ‘GHC.Platform.PlatformMisc’,
ghc-lib-parser-ex > imported from ‘GHC.Platform’ at src/Language/Haskell/GhclibParserEx/GHC/Settings/Config.hs:18:1-19
ghc-lib-parser-ex > |
ghc-lib-parser-ex > 59 | platformMisc = PlatformMisc {}
ghc-lib-parser-ex > |
Errors are all related with platform* definitions.
It may be a error in out stack.yaml but i am not getting to identify it, thanks in advance
Add isQualifiedPost
Add a predicate for whether an import uses QualifiedPost (ndmitchell/hlint#1070).
`baseFixities` does not include `&`
It's defined in Data.Function.
Can I send a PR for this?
Building an app to minimise imports / specify exports
Perhaps this library is too low-level, but I'd like to be able to build an app that
- generates a minimal import list for a set of modules in a project (and updates the sources)
- figures out all the exports that are used in modules across a project (and updates the sources)
GHC can be coaxed into generating a nicely-formatted set of minimal imports (by -ddump-minimal-imports) so presumably this library can get at them somehow and update the sources, ideally preserving comments using some heuristic.
Those imports across a project can then be used to generate a minimal list of exports.
I think that this would be helpful for detecting and minimising cruft in old codebases.
Any pointers to where to start would be gratefully received. Perhaps the app would make a good demo for the library.
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