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