lix/doc/manual/rl-next/always-allow-substitutes.md

---
synopsis: "Add an option `always-allow-substitutes` to ignore `allowSubstitutes` in derivations"
prs: 8047
credits: [lovesegfault, horrors]
category: Improvements
---

You can set this setting to force a system to always allow substituting even
trivial derivations like `pkgs.writeText`. This is useful for
[`nix-fast-build --skip-cached`][skip-cached] and similar to be able to also
ignore trivial derivations.

[skip-cached]: https://github.com/Mic92/nix-fast-build?tab=readme-ov-file#avoiding-redundant-package-downloads
release notes: add a bunch of them Also fix typos introduced by the commits I read. I have run the addDrvOutputDependencies release note past Ericson since I was confused by what the heck it was doing, and he was saying it was reasonable. Change-Id: Id015353b00938682f7faae7de43df7f991a5237e 2024-05-20 19:17:54 +00:00			`---`
			synopsis: "Add an option `always-allow-substitutes` to ignore `allowSubstitutes` in derivations"
			`prs: 8047`
			`credits: [lovesegfault, horrors]`
			`category: Improvements`
			`---`

			`You can set this setting to force a system to always allow substituting even`
			trivial derivations like `pkgs.writeText`. This is useful for
			[`nix-fast-build --skip-cached`][skip-cached] and similar to be able to also
			`ignore trivial derivations.`

			`[skip-cached]: https://github.com/Mic92/nix-fast-build?tab=readme-ov-file#avoiding-redundant-package-downloads`