[Haskell-cafe] how to prevent 'stack' from installing 'ghc'?
johannes.waldmann at htwk-leipzig.de
Sun Jun 10 13:51:37 UTC 2018
'stack' tries to download and install a 'ghc' binary
in case 'ghc' in $PATH does not match
what is needed for the resolver given in 'stack.yaml'
How can I switch this off completely and reliably?
I much rather 'stack' just fails when it detects the mismatch.
putting 'system-ghc: true' in 'stack.yaml'
and '~/.stack/config.yaml' apparently is not enough.
'stack' does warn before downloading,
but sometimes I'm not seeing the warning,
e.g., because the whole thing is triggered silently
from using 'intero'.
I do have several ghc executables (built from source)
and I just need to set PATH accordingly.
It would be even better if I could tell
'stack' (once and for all) about these locations.
I think I understand why 'stack' does what it does
(reproducible builds) but I really want to minimize
the number of other people's binaries on my machine.
I do use the auto-download feature for easier CI builds -
so I agree it can be useful.
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