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Skip copying metadata if source and destination match

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This commit is contained in:
Julian Ospald 2021-08-07 09:55:45 +02:00
parent e903aeb555
commit 6e07e9e56b
Signed by: hasufell
GPG Key ID: 3786C5262ECB4A3F
1 changed files with 16 additions and 1 deletions
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15
lib/GHCup/Download.hs
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@ -321,7 +321,22 @@ download uri eDigest dest mfn etags
-- destination dir must exist
liftIO $ createDirRecursive' dest
let fromFile = T.unpack . decUTF8Safe $ path
-- clean up etags file
liftIO $ hideError doesNotExistErrorType $ rmFile (etagsFile destFile)
-- check if source and dest are the same and skip in that case
fromFileNormalized <- handleIO
(\_ -> pure $ normalise fromFile)
(liftIO $ canonicalizePath fromFile)
destFileNormalized <- handleIO
(\_ -> pure $ normalise destFile)
(liftIO $ canonicalizePath destFile)
if | fromFileNormalized /= destFileNormalized -> do
lift $ $(logDebug) [i|cp #{fromFile} #{destFile}|]
liftIO $ copyFile fromFile destFile
| otherwise -> lift $ $(logDebug) [i|destination and source match, skipping: #{destFile}|]
pure destFile
dl = do
let uri' = decUTF8Safe (serializeURIRef' uri)