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Print better error on 'ghcup <command> <tool>-<version>'

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Wrt #180
This commit is contained in:
Julian Ospald
2023-07-20 21:41:22 +08:00
parent 6623e4b1c8
commit c149ee8d2b
6 changed files with 32 additions and 14 deletions
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20
lib/GHCup/Errors.hs
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@@ -206,12 +206,26 @@ instance HFErrorProject NoCompatiblePlatform where
eDesc _ = "No compatible platform could be found"
-- | Unable to find a download for the requested version/distro.
data NoDownload = NoDownload
data NoDownload = NoDownload GHCTargetVersion Tool (Maybe PlatformRequest)
| NoDownload' GlobalTool
deriving Show
instance Pretty NoDownload where
pPrint NoDownload =
text (eDesc (Proxy :: Proxy NoDownload))
pPrint (NoDownload tver@(GHCTargetVersion mtarget vv) tool mpfreq)
| (Just target) <- mtarget
, target `elem` (T.pack . prettyShow <$> enumFromTo (minBound :: Tool) (maxBound :: Tool))
= text $ "Unable to find a download for "
<> show tool
<> " version '"
<> T.unpack (tVerToText tver)
<> maybe "'\n" (\pfreq -> "' on detected platform " <> pfReqToString pfreq <> "\n") mpfreq
<> "Perhaps you meant: 'ghcup <command> "
<> T.unpack target
<> " "
<> T.unpack (prettyVer vv)
<> "'"
| otherwise = text $ "Unable to find a download for " <> T.unpack (tVerToText tver)
pPrint (NoDownload' globalTool) = text $ "Unable to find a download for " <> prettyShow globalTool
instance HFErrorProject NoDownload where
eBase _ = 10