fix config handling revert complex patch handling #90
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In more advanced usage scenarios, the guarantees of this code path are never strong enough and the error produced is non-recoverable. Sorry to lovers of "automagic".
The patching functionality is fundamentally ill designed and makes the code complex to the point that it is increasingly hard to audit it for correctness. The root of evil and ill-design is that it is a work-around for what the Unoficial Flake Roadmap describes as follows: - flake inputs are flake inputs - patched flake inputs are flake inputs Furthermore this commit fixes a naive implementation of nixpkgs.config handling that causes nasty regressions on edge cases. Namely, not only can a nixpkgs config be a function, but also the merging semantics as defined by the module system requires detailed knowledge of the potential shape of the cofig attrs / function.
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I agree with this, but I realize a fair bit of contributors to here really value the patches feature. I think we need some discussion on patching and what people use it for. |
shism2
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Jun 26, 2022
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Revert patching functionality and fix config handling
The patching functionality is fundamentally ill designed
and makes the code complex to the point that it is increasingly
hard to audit it for correctness.
The root of evil and ill-design is that it is a work-around for
what the Unoficial Flake Roadmap describes as follows:
Furthermore this commit fixes a naive implementation of nixpkgs.config
handling that causes nasty regressions on edge cases. Namely, not only
can a nixpkgs config be a function, but also the merging semantics
as defined by the module system requires detailed knowledge of the
potential shape of the cofig attrs / function.