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Comment by mrkgnao | Hacker News Reader

Are you on NixOS by any chance? There is a problem with /run filling up that you can fix by using

    TMPDIR=/tmp stack whatever

I switched back to Arch a while back, and I'm not sure if this problem still exists on the NixOS side. (Of course, you can always choose a bigger /run size in configuration.nix.)

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> Are you on NixOS by any chance?

Yes. That's the issue I alluded to with "stack filling up temp dir".

Off the top of my head, other issues include:

- Bootstrapping GHC from old versions. This tries to run a script with a non-existent `/bin/bash` shebang. A more portable version would be `/usr/bin/env bash`, but since bootstrapping relies on out-of-date versions this can't be changed. Since such paths can vary depending on the OS, the right thing to do is using what the OS provides, rather than making yet another attempt at cross-OS/distro packaging for a one-off app.

- When using "Nix integration", to try and avoid GHC bootstrap hell, the "lts" releases written in various project's "stack.yaml" files is assumed to correspond to a key in the `(import <nixpkgs> {}).haskell` attribute set. Except that a) different projects use a variety of these identifiers, which may or may not correspond to actual keys, b) nixpkgs doesn't actually contain any of these identifiers anymore https://github.com/NixOS/nixpkgs/issues/14897

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