Failure to start hie when cabal-install is installed

[GuillaumeDesforges]

Hello

Stack trace

Child process fails on
/nix/store/a1fgqywyav0dkmk3kkq3hm8219aas6cw-cabal-helper-0.9.0.0/bin/cabal-helper-wrapper "--with-ghc=ghc" "--with-ghc-pkg=ghc-pkg" "--with-cabal=cabal" "v1-style" "/home/arsleust/projects/test-project" "/home/arsleust/projects/test-project/dist" "package-db-stack" "flags" "compiler-version" "ghc-merged-pkg-options" "config-flags" "non-default-config-flags" "ghc-src-options" "ghc-pkg-options" "ghc-lang-options" "ghc-options" "source-dirs" "entrypoints" "needs-build-output"

Setup

I am on NixOS and I use the following setup :

generated.nix : generated by cabal2nix, contains GHC and Haskell packages
                                 | (derivation)
                                \ /
   default.nix : I add custom build tools, especially non-Haskell packages
                                 |
                                \ /
                dev.nix : from which I start VS Code

default.nix

let
  pkgs = import <nixpkgs> {};
  generatedDrv = import ./generated.nix {};
in
  generatedDrv.overrideAttrs (generated: {
    buildInputs = generated.buildInputs ++ [
      ## Put additional packages here
    ];
  })

dev.nix

let
  pkgs = import <nixpkgs> {};
  defaultDrv = import ./default.nix;
  all-hies = import (fetchTarball "https://github.com/infinisil/all-hies/tarball/master") {};
  hie = all-hies.selection { selector = p: { inherit (p) ghc864; }; };
  wrapped-vscode = pkgs.runCommand "${pkgs.vscode.name}" {nativeBuildInputs = [ pkgs.makeWrapper ]; } ''
    mkdir -p $out/bin
    makeWrapper ${pkgs.vscode}/bin/code $out/bin/code --prefix PATH : ${pkgs.lib.makeBinPath [hie]}
  '';
in
  defaultDrv.overrideAttrs (default: {
    buildInputs = default.buildInputs ++ [
      ## Put additional DEV packages here
      pkgs.cabal-install
      pkgs.haskellPackages.hoogle
      wrapped-vscode
    ];
  })

Everything works good if I remove the pkgs.cabal-install above, except the warning that cabal-install is not found (and that I should read README).

Investigation

I tried to run in nix-shell the command:

[nix-shell:~/projects/test-project]$ /nix/store/a1fgqywyav0dkmk3kkq3hm8219aas6cw-cabal-helper-0.9.0.0/bin/cabal-helper-wrapper "--with-ghc=ghc" "--with-ghc-pkg=ghc-pkg" "--with-cabal=cabal" "v1-style" "/home/arsleust/projects/test-project" "/home/arsleust/projects/test-project/dist" "package-db-stack" "flags" "compiler-version" "ghc-merged-pkg-options" "config-flags" "non-default-config-flags" "ghc-src-options" "ghc-pkg-options" "ghc-lang-options" "ghc-options" "source-dirs" "entrypoints" "needs-build-output"
cabal-helper-wrapper: Installing a private copy of Cabal because we couldn't
find the right version in your global/user package-db, this might take a
while but will only happen once per Cabal version you're using.

If anything goes horribly wrong just delete this directory and try again:
    /home/arsleust/.cache/cabal-helper

If you want to avoid this automatic installation altogether install
version 2.4.1.0 of Cabal manually (into your user or global package-db):
    $ cabal install Cabal --constraint "Cabal == 2.4.1.0"

Installing Cabal 2.4.1.0 ...
Warning: The package list for 'hackage.haskell.org' does not exist. Run 'cabal
update' to download it.
cabal: There is no package named 'Cabal'.
You may need to run 'cabal update' to get the latest list of available
packages.

cabal-helper-wrapper: Installing Cabal version 2.4.1.0 failed.

You have the following choices to fix this:

- The easiest way to try and fix this is just reconfigure the project and try
  again:
        $ cabal clean && cabal configure

- If that fails you can try to install the version of Cabal mentioned above
  into your global/user package-db somehow, you'll probably have to fix
  something otherwise it wouldn't have failed above:
        $ cabal install Cabal --constraint 'Cabal == 2.4.1.0'

- If you're using `Build-Type: Simple`:
  - You can see if you can reinstall your cabal-install executable while
    having it linked to a version of Cabal that's available in you
    package-dbs or can be built automatically:
        $ ghc-pkg list | grep Cabal  # find an available Cabal version
            Cabal-W.X.Y.Z
        $ cabal install cabal-install --constraint 'Cabal == W.X.*'
    Afterwards you'll have to reconfigure your project:
        $ cabal clean && cabal configure

- If you're using `Build-Type: Custom`:
  - Have cabal-install rebuild your Setup.hs executable with a version of the
    Cabal library that you have available in your global/user package-db:
        $ cabal clean && cabal configure
    You might also have to install some version of the Cabal to do this:
        $ cabal install Cabal

This definitly shouldn't make the HIE crash.

My questions are :

• is the extension crashing, or is it HIE ?
• should it really crash for this ?
• could a cabal update fix this ?

I'm a bit new to all this, so I might be completly wrong, ut anyway thanks for your time !

[Ptival]

I have pretty much the same error, except, because I have some ambient updated cabal, the error message is slightly different:

/nix/store/dcw6qcawz4cnq8v3yjvnvn0bp6vb73pd-cabal-helper-0.9.0.0/bin/cabal-helper-wrapper "--with-ghc=/nix/store/q4qgr4xd1x7dpmsywn4h52j6vccdwcv6-ghc-8.6.5/bin/ghc" "--with-ghc-pkg=/nix/store/q4qgr4xd1x7dpmsywn4h52j6vccdwcv6-ghc-8.6.5/bin/ghc-pkg" "--with-cabal=cabal" "v1-style" "/Users/val/Galois/projects/saw/saw-script" "/Users/val/Galois/projects/saw/saw-script/.stack-work/dist/x86_64-osx-nix/Cabal-2.4.0.1" "package-db-stack" "flags" "compiler-version" "ghc-merged-pkg-options" "config-flags" "non-default-config-flags" "ghc-src-options" "ghc-pkg-options" "ghc-lang-options" "ghc-options" "source-dirs" "entrypoints" "needs-build-output"
cabal-helper-wrapper: Installing a private copy of Cabal because we couldn't
find the right version in your global/user package-db, this might take a
while but will only happen once per Cabal version you're using.

If anything goes horribly wrong just delete this directory and try again:
    /Users/val/.cache/cabal-helper

If you want to avoid this automatic installation altogether install
version 2.4.1.0 of Cabal manually (into your user or global package-db):
    $ cabal install Cabal --constraint "Cabal == 2.4.1.0"

Installing Cabal 2.4.1.0 ...
Unpacking to Cabal-2.4.1.0/
cabal: Invalid package ID:
/private/var/folders/fr/xkmxc8ld07dgz85nwdn0zx0c0000gn/T/cabal-helper-Cabal-source65368/Cabal-2.4.1.0

cabal-helper-wrapper: Installing Cabal version 2.4.1.0 failed.

Note that my ambient version of Cabal is 3.0.

[jneira]

@GuillaumeDesforges @Ptival hie not longer uses cabal-helper-wrapper so this one should be fixed, feel free to reopen if it is not the case