`stack-clean-old` is a handy tool to measure the size of, and clean up some old GHC versions installed by stack
https://hackage.haskell.org/package/stack-clean-old
https://hackage.haskell.org/package/stack-clean-old
:(
;stack-clean-old remove ghc-tinfo6-8.6.5
stack-clean-old: Data.Version.Extra.readVersion: no parse
CallStack (from HasCallStack):
error, called at src/Data/Version/Extra.hs:24:16 in extra-1.7.12-c8abedcb24d190c27055610ca4e6e83d1d7f4b8cbbc2717ebf4c287151ce1ccd:Data.Version.Extra
readVersion, called at src/Main.hs:89:17 in main:Main- replies
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@mart_brooks ouch. Yes that stuff can be a nightmare. "Stack", greatly improved things, IMHO. But I guess you're well out of that now anyway
@mart_brooks urgh yes very typical nightmare story. From what I gather, all Debian's Haskell packages have to be built at the same time, or something like that, for similar reasons