Error when installing with nix on CentOS 7 about too-many-cells HOT 4 CLOSED

That is indeed a weird one. I wonder if it has to do with the age of CentOS 7 vs. 8. Can you try to edit the GHC version in the default.nix file? Instead of ghc8104, can you change it to ghc881 and rerun it (there may be some dependencies that change though which you might need to jailbreak). If that doesn't work for the same reason (ghc-pkg) try another older version of GHC: https://www.haskell.org/ghc/download.html (removing the periods for the version to put in the default.nix file).

from too-many-cells.

Thank you for your quick reply!

Instead of ghc8104, can you change it to ghc881 and rerun it

Then I got the following error.

$ nix-env -f default.nix -i too-many-cells
error: attribute 'ghc881' missing

       at /T02Data/niuyw/software/too-many-cells/default.nix:31:14:

           30|   # Haskell compiler
           31|   compiler = pkgs.haskell.packages."${compilerVersion}";
             |              ^
           32|
(use '--show-trace' to show detailed location information)

When I changed it to ghc801, the error was the same.

from too-many-cells.

That means that the particular GHC version is too old for that snapshot. I recently updated the nixpkgs snapshot, so try commit de5aeaf and see if that works.

from too-many-cells.

After switching to commit de5aeaf, the too-many-cells could be successfully installed through nix-env.

Thank you so much.

from too-many-cells.