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guix/gnu/packages/patches/agda-libdirs-env-variable.p...

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From 457bc7438a4f0801dbf332fa2369248bddf5da0c Mon Sep 17 00:00:00 2001
Message-Id: <457bc7438a4f0801dbf332fa2369248bddf5da0c.1678309546.git.dev@jpoiret.xyz>
From: Josselin Poiret <dev@jpoiret.xyz>
Date: Wed, 8 Mar 2023 18:31:52 +0100
Subject: [PATCH] Add environment variable for library directories
AGDA_LIBDIRS is a new environment colon-separated variable for site libraries.
Agda will look for .agda-lib files directly inside direct descendants of these.
---
src/full/Agda/Interaction/Library.hs | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/src/full/Agda/Interaction/Library.hs b/src/full/Agda/Interaction/Library.hs
index 09c1f2a82..774cc3e74 100644
--- a/src/full/Agda/Interaction/Library.hs
+++ b/src/full/Agda/Interaction/Library.hs
@@ -323,13 +323,25 @@ getInstalledLibraries overrideLibFile = mkLibM [] $ do
raiseErrors' [ LibrariesFileNotFound theOverrideLibFile ]
return []
Right file -> do
- if not (lfExists file) then return [] else do
+ siteLibDirs <- liftIO $ fromMaybe [] . fmap splitAtColon . lookup "AGDA_LIBDIRS" <$> getEnvironment
+ siteLibs <- liftIO $ concat <$> mapM findSiteLibs siteLibDirs
+ if not (lfExists file) then parseLibFiles Nothing $ nubOn snd ((0,) <$> siteLibs) else do
ls <- liftIO $ stripCommentLines <$> UTF8.readFile (lfPath file)
files <- liftIO $ sequence [ (i, ) <$> expandEnvironmentVariables s | (i, s) <- ls ]
- parseLibFiles (Just file) $ nubOn snd files
+ parseLibFiles (Just file) $ nubOn snd (files ++ fmap (0,) siteLibs)
`catchIO` \ e -> do
raiseErrors' [ ReadError e "Failed to read installed libraries." ]
return []
+ where splitAtColon :: String -> [String]
+ splitAtColon "" = []
+ splitAtColon str = case break (==':') str of
+ (a, _:b) -> a : splitAtColon b
+ (a, "") -> [a]
+ findSiteLibs :: String -> IO [String]
+ findSiteLibs dir = do
+ subDirs <- filterM doesDirectoryExist =<< map (dir </>) <$> listDirectory dir
+ subFiles <- mapM (\dir -> map (dir </>) <$> listDirectory dir) subDirs
+ return $ concatMap (filter (List.isSuffixOf ".agda-lib")) subFiles
-- | Parse the given library files.
--
base-commit: 183534bc41af5a53daf685122997dc98883f2be2
--
2.39.1