Could not find module ‘Distribution.Extra.Doctest’ --

[testexplode]

If I want to compile for example comonad or parsers I get the following errors:

comonad-5.0.2-9P9ZbrB2lYo8asSaS7XXK9 failed during the configure step. The
exception was:
dieVerbatim: user error (cabal: '/usr/bin/ghc' exited with an error:

/tmp/cabal-tmp-6837/comonad-5.0.2/dist/setup/setup.hs:12:1: error:
Could not find module ‘Distribution.Extra.Doctest’
There are files missing in the ‘cabal-doctest-1.0.2’ package,
try running 'ghc-pkg check'.
Use -v to see a list of the files searched for.
|
12 | import Distribution.Extra.Doctest ( defaultMainWithDoctests )
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)

I'm using manjaro-linux,

My versions are:
cabal-install version 2.0.0.0
compiled using version 2.0.0.2 of the Cabal library
The Glorious Glasgow Haskell Compilation System, version 8.2.1

Due to this error many packages that Idris is using are not buildable.

I tried to use the patch from issue #19, but it did not work, still the same error.

[RyanGlScott]

It sounds like something is screwed up wkth your installation of cabal-doctest. Does ghc-pkg check say anything about it?

[testexplode]

No it says nothing about it.

It says:

[me@computer ~]$ ghc-pkg check
Warning: haddock-interfaces: /home/me/.cabal/share/doc/x86_64-linux-ghc-8.2.1/fail-4.9.0.0/html/fail.haddock doesn't exist or isn't a file
Warning: haddock-interfaces: /usr/share/doc/haskell-zlib/html/zlib.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-zlib/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-text/html/text.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-text/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-tar/html/tar.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-tar/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-stm/html/stm.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-stm/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-random/html/random.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-random/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-parsec/html/parsec.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-parsec/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-network/html/network.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-network/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-network-uri/html/network-uri.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-network-uri/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-mtl/html/mtl.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-mtl/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-http/html/HTTP.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-http/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-hashable/html/hashable.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-hashable/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-hackage-security/html/hackage-security.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-hackage-security/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-edit-distance/html/edit-distance.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-edit-distance/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-ed25519/html/ed25519.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-ed25519/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-echo/html/echo.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-echo/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-cryptohash-sha256/html/cryptohash-sha256.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-cryptohash-sha256/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-base64-bytestring/html/base64-bytestring.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-base64-bytestring/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-base16-bytestring/html/base16-bytestring.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-base16-bytestring/html doesn't exist or isn't a directory
Warning: haddock-interfaces: /usr/share/doc/haskell-async/html/async.haddock doesn't exist or isn't a file
Warning: haddock-html: /usr/share/doc/haskell-async/html doesn't exist or isn't a directory

[RyanGlScott]

OK. I'm grasping at straws a bit here, because I'm unable to reproduce the issue. Can you try uninstalling and reinstalling cabal-doctest to see if that makes a difference?

[testexplode]

I tried to reinstall doctest, no change.
I made the installation of idris cabal install idris again on a virtual machine that has just been updated to ghc 8.2.1 (so no old packages): no change, same error

Perhaps it has something to do with the new dynamic linking in arch and manjaro ?

I had to change the ~/.cabal/config with

library-vanilla: False
shared: True
executable-dynamic: True

[RyanGlScott]

Ah! Thank you, that ~/.cabal/config info was very helpful. I'm now able to reproduce the issue locally on my Ubuntu machine if I run:

$ cabal install --disable-library-vanilla distributive-0.5.3

I'm not sure yet why exactly this is failing, though.

[RyanGlScott]

My gut feeling is that cabal is to blame here, given that this seems to happen specifically with custom-setup scripts. I've opened haskell/cabal#4812 to track this. (EDIT: Which, it turns out, is a duplicate of haskell/cabal#1720.)

[RyanGlScott]

Alas, there's nothing more we can do on cabal-doctest's end, so I'll close this in favor of haskell/cabal#1720.