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| -rw-r--r-- | doc/builders/fetchers.chapter.md | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/builders/fetchers.chapter.md b/doc/builders/fetchers.chapter.md index 26b70b1fde2b7..3d89410f97230 100644 --- a/doc/builders/fetchers.chapter.md +++ b/doc/builders/fetchers.chapter.md @@ -5,7 +5,11 @@ Building software with Nix often requires downloading source code and other file ## Caveats -Fetchers create [_fixed output derivations_](https://nixos.org/manual/nix/stable/#fixed-output-drvs) that downloaded files. Later, Nix can reuse the downloaded files via their hash. While the caching improves performance, it can lead to some confusion. For example, consider the following fetcher: +Fetchers create [fixed output derivations](https://nixos.org/manual/nix/stable/#fixed-output-drvs) from downloaded files. +Nix can reuse the downloaded files via the hash of the resulting derivation. + +The fact that the hash belongs to the Nix derivation output and not the file itself can lead to confusion. +For example, consider the following fetcher: ```nix fetchurl { |