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d278fd78af
Because downstream code expects to use `==` on platform attrsets, we are unfortunately not able to throw a useful error message when the `sharedLibrary` attribute is accessed. When users do a comparison like: stdenv.hostPlatform == pkgsStatic.stdenv.hostPlatform ... in a situation where `stdenv.hostPlatform.hasSharedLibraries`, they expect this to return `false`. Unfortunately Nix does a deep equality comparison here, and ends up forcing the `pkgsStatic.stdenv.hostPlatform.extensions.sharedLibrary` attribute, which throws the error. Rather than returning `null`, this commit instead simply omits the `extensions.sharedLibrary` attribute. This provides the user with a more-useful error message: instead of waiting until the `null` is used (and hoping that produces an error), the user will get an error about the `extensions.sharedLibrary` attribute being missing, at the position where it was referenced. Big thanks to @trofi for his PR to add `NIX_VALIDATE_EVAL_NONDETERMINISM` to Nix, which I am now using. It made tracking this down really easy! Fixes #244045 |
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| .. | ||
| architectures.nix | ||
| default.nix | ||
| doubles.nix | ||
| examples.nix | ||
| flake-systems.nix | ||
| inspect.nix | ||
| parse.nix | ||
| platforms.nix | ||