"stack install libssh2-0.2.0.7" for lts-16.4

[oshyshko]

I'd like to use the library in my project that uses stack lts-16.4 (ghc-8.8.3).

Here's what I get when trying to install it (I am on macos 10.15.5):

$ brew install openssl libssh2
...
$ export PKG_CONFIG_PATH="/usr/local/opt/openssl@1.1/lib/pkgconfig"

$ stack install libssh2-0.2.0.7
libssh2> configure
libssh2> Configuring libssh2-0.2.0.7...
libssh2> build
libssh2> Preprocessing library for libssh2-0.2.0.7..
libssh2> Building library for libssh2-0.2.0.7..
libssh2> [1 of 5] Compiling Network.SSH.Client.LibSSH2.Types
libssh2> 
libssh2> /private/var/folders/qk/vw0nqkz90cz52plb04b416fh0000gn/T/stack-008b142a03477e0c/libssh2-0.2.0.7/src/Network/SSH/Client/LibSSH2/Types.chs:46:1: warning: [-Wunused-imports]
libssh2>     The import of ‘Foreign.C.Types’ is redundant
libssh2>       except perhaps to import instances from ‘Foreign.C.Types’
libssh2>     To import instances alone, use: import Foreign.C.Types()
libssh2>    |
libssh2> 46 | import Network.Socket
libssh2>    | ^^^^^^^^^^^^^^^^^^^^^^
libssh2> [2 of 5] Compiling Network.SSH.Client.LibSSH2.WaitSocket
libssh2> 
libssh2> /private/var/folders/qk/vw0nqkz90cz52plb04b416fh0000gn/T/stack-008b142a03477e0c/libssh2-0.2.0.7/src/Network/SSH/Client/LibSSH2/WaitSocket.hs:29:41: error:
libssh2>     • Couldn't match type ‘IO Foreign.C.Types.CInt’
libssh2>                      with ‘Foreign.C.Types.CInt’
libssh2>       Expected type: Socket -> Foreign.C.Types.CInt
libssh2>         Actual type: Socket -> IO Foreign.C.Types.CInt
libssh2>     • In the second argument of ‘(.)’, namely ‘fdSocket’
libssh2>       In the second argument of ‘(.)’, namely ‘Fd . fdSocket’
libssh2>       In the expression: threadWaitRead_ . Fd . fdSocket
libssh2>    |
libssh2> 29 | threadWaitRead = threadWaitRead_ . Fd . fdSocket
libssh2>    |                                         ^^^^^^^^
libssh2> 
libssh2> /private/var/folders/qk/vw0nqkz90cz52plb04b416fh0000gn/T/stack-008b142a03477e0c/libssh2-0.2.0.7/src/Network/SSH/Client/LibSSH2/WaitSocket.hs:32:43: error:
libssh2>     • Couldn't match type ‘IO Foreign.C.Types.CInt’
libssh2>                      with ‘Foreign.C.Types.CInt’
libssh2>       Expected type: Socket -> Foreign.C.Types.CInt
libssh2>         Actual type: Socket -> IO Foreign.C.Types.CInt
libssh2>     • In the second argument of ‘(.)’, namely ‘fdSocket’
libssh2>       In the second argument of ‘(.)’, namely ‘Fd . fdSocket’
libssh2>       In the expression: threadWaitWrite_ . Fd . fdSocket
libssh2>    |
libssh2> 32 | threadWaitWrite = threadWaitWrite_ . Fd . fdSocket
libssh2>    |                                           ^^^^^^^^

--  While building package libssh2-0.2.0.7 using:
      /Users/oshyshko/.stack/setup-exe-cache/x86_64-osx/Cabal-simple_mPHDZzAJ_3.0.1.0_ghc-8.8.3 --builddir=.stack-work/dist/x86_64-osx/Cabal-3.0.1.0 build --ghc-options ""
    Process exited with code: ExitFailure 1

How do I get it work?

[vst]

As far as I understand, libssh2-hs uses network >= 2.3 && < 3.0 dependency as of now. But your lts has network >= 3.

I am personally relying on lts-14.27 for the moment.

There is a fork of @chessai which mentions network-v3:

https://github.com/chessai/libssh2-hs/tree/network-v3

I did not have time to check that, though. It might be in progress.

[hkailahi]

+1. I am seeing the same failure on lts-17.9 (ghc-8.10.4), which has network-3.1.1.1.

I tried with the above fork and latest commit with more recent network3 PR - #58.

[vst]

Somewhere, sometime ago, I tried to add this very git repository as an extra-deps in my stack.yaml with lts-16.x. And I recall that it did the job.

Something like this:

extra-deps:
- git: https://github.com/portnov/libssh2-hs.git
  commit: d8a20f072f99aa2c415748734dac8225c74b45cc
  subdirs:
  - libssh2

[hkailahi]

That works, thanks! Hmm I was using the same incantation in my stack.yaml except without subdirs: - libssh2.

I'm surprised these give different results. My guess as to why is that it was there's a top level stack.yaml here using network-2.6.3.6 (via lts-12.14), which isn't available in the subdirectory.