stack install.hs cabal fails

[arrowd]

I'm running stack install.hs cabal on FreeBSD and get the following output:

┌─[arr]─[/home/arr/projects/haskell-ide-engine]──╼
└──╼ % stack ./install.hs cabal 
# stack (for cabal)
# stack (for cabal)
Copying from /usr/home/arr/.stack/snapshots/x86_64-freebsd-ino64/nightly-2018-12-15/8.6.2/bin/cabal to /usr/home/arr/.local/bin/cabal

Copied executables to /usr/home/arr/.local/bin:
- cabal

Warning: The cabal executable found on the PATH environment variable is /usr/home/arr/.stack/snapshots/x86_64-freebsd-ino64/nightly-2018-12-15/8.6.2/bin/cabal and not the version that was just
         installed. This means that cabal calls on the command line will not use this version.
# cabal (for cabal)
Warning: The update command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-update command
or the legacy v1-update alias as new-style projects will become the default in
the next version of cabal-install. Please file a bug if you cannot replicate a
working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Warning: No remote package servers have been specified. Usually you would have
one specified in the config file.
# cabal (for cabal)
Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Warning: No remote package servers have been specified. Usually you would have
one specified in the config file.
cabal: There is no package named 'Cabal'.
You may need to run 'cabal update' to get the latest list of available
packages.

Error when running Shake build system:
  at src/Development/Shake/Internal/Args.hs:81:69-79:
* Depends on: cabal
* Raised the exception:
user error (Development.Shake.command_, system command failed
Command: cabal install Cabal-2.4.1.0 --with-compiler=/usr/home/arr/.stack/programs/x86_64-freebsd/ghc-ino64-8.6.3/bin/ghc
Exit code: 1
Stderr:
Warning: The install command is a part of the legacy v1 style of cabal usage.

Please switch to using either the new project style and the new-install
command or the legacy v1-install alias as new-style projects will become the
default in the next version of cabal-install. Please file a bug if you cannot
replicate a working v1- use case with the new-style commands.

For more information, see: https://wiki.haskell.org/Cabal/NewBuild

Warning: No remote package servers have been specified. Usually you would have
one specified in the config file.
cabal: There is no package named 'Cabal'.
You may need to run 'cabal update' to get the latest list of available
packages.

)

The warning message about PATH seems unrelated and harmless, but

No remote package servers have been specified

seems suspicious.

Any ideas how fix/debug this?

[mpickering]

I think the problem is actually cabal: There is no package named 'Cabal'.

I have no idea what the install script does but the fact it called cabal install seems dubious to me. What is that supposed to do?

[fendor]

Line is copied from the original Makefile, I dont know what it actually does or why it is needed.
Maybe @alanz knows more?

[alanz]

There is a package called Cabal on hackage, which is the base library used by cabal-install, and also by GHC (I think).

I recall at some stage we had to pull it in specifically, because the older GHC versions shipped with a version that is too early for ghc-mod. I am not sure if it is still needed, perhaps do an experiment to see what happens, but make sure to test the actual installed version of hie for that GHC version, with Cabal uninstalled.

[samuelpilz]

I am currently investigating the need of this step and it currently seems that this step is not required.

[arrowd]

I removed "cabal" rule from install.hs and stack install.hs hie-8.6.3 finished fine for me.

[fendor]

@arrowd, was it a complete clean install? E.g. only stack and git were freshly installed?

[arrowd]

Hmm, not sure. I also have ghc installed system-wide, but not cabal.

[samuelpilz]

does running cabal update fix the issue?

[arrowd]

Which cabal? Installed by "cabal" rule? I didn't try.

[samuelpilz]

stack install.hs cabal currently calls stack instal cabal-install. Then, you should have cabal in the path, normaly ~/.local/bin.

[samuelpilz]

Is this still an issue? I am not able to reproduce this error

[arrowd]

Ah, I found the source of the error. I had empty ~/.cabal/config file and this was causing cabal update to fail.

I'm still don't like that it installs cabal-install into my PATH, though.

[samuelpilz]

@arrowd have a look out for #1168. This fixes the problem