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Showing content from https://github.com/commercialhaskell/stack/issues/658 below:

How can I downgrade a package? · Issue #658 · commercialhaskell/stack · GitHub

Hi,

I have problems with the tls package and want to downgrade it from 1.3.1 to 1.2.17. How can I do that?

I have the following files:

haskell-apns.cabal:

build-depends: [...]
               , tls == 1.2.17  -- I tried to pin down the version, originally there was no version constraint
               [...]

stack.yaml:

packages:
- '.'
extra-deps: ["tls-1.2.17", "x509-validation-1.5.2", "x509-1.5.1", "x509-store-1.5.0"]
resolver: nightly-2015-07-19

1.2.17 is built, but 1.3.1 is used and e.g. stack ghci or stack unpack use 1.3.1.

Any ideas?

PS: I use stack: Version 0.1.2.1, Git revision 500a55336af2245d2bcb3ed4201b126a030088c7, but I also tried 0.1.2.0.


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