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Last active February 12, 2021 18:28
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RFC: `env` attribute for setting `mkDerivation` environment
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env-rfc.md

Work in Progress

Environment variables should go to env

Currently, the attributes passed to stdenv.mkDerivation serve two purposes:

  • controlling stdenv
  • setting environment variables

This RFC intends to untangle this situation by relegating the setting of environment variables to a dedicated env attribute set.

env attribute

Benefits

Stages

  • Add support for env to mkDerivation. The content would be passed back to derivation.
  • Move known environment attributes (nixpkgs-hammering has a list) to env (can be done semi-programmatically) and random attributes using recursive attrsets instead of lets into lets. Only stdenv options should remain.
  • Make stdenv take closed pattern as an argument. ¿TODO: How to deal with setup hooks that introduce extra parameters?

Current implementation

Alternatives

  • status quo
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