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authorValentin Gagarin <valentin.gagarin@tweag.io>2023-03-23 00:10:17 +0100
committerGitHub <noreply@github.com>2023-03-23 00:10:17 +0100
commit0ced5132fd21af8a4892c94880174998d94aeeea (patch)
treea928cbb83a076e48906cce70d271ca7a588be39f /doc
parent6dbce3215fa2e30e1daafcc70d6926cd97987612 (diff)
parent96129246ad7d64241a84d900aec5b105f9408f45 (diff)
Merge pull request #6865 from zuzuleinen/manual-nix-path-empty
document what happens when NIX_PATH is empty
Diffstat (limited to 'doc')
-rw-r--r--doc/manual/src/command-ref/env-common.md11
1 files changed, 11 insertions, 0 deletions
diff --git a/doc/manual/src/command-ref/env-common.md b/doc/manual/src/command-ref/env-common.md
index c5d38db47..2be55be52 100644
--- a/doc/manual/src/command-ref/env-common.md
+++ b/doc/manual/src/command-ref/env-common.md
@@ -13,6 +13,17 @@ Most Nix commands interpret the following environment variables:
e.g. `/home/eelco/Dev:/etc/nixos`. It can be extended using the
[`-I` option](./opt-common.md#opt-I).
+ If `NIX_PATH` is not set at all, Nix will fall back to the following list in [impure](./conf-file.md#conf-pure-eval) and [unrestricted](./conf-file.md#conf-restrict-eval) evaluation mode:
+
+ 1. `$HOME/.nix-defexpr/channels`
+ 2. `nixpkgs=/nix/var/nix/profiles/per-user/root/channels/nixpkgs`
+ 3. `/nix/var/nix/profiles/per-user/root/channels`
+
+ If `NIX_PATH` is set to an empty string, resolving search paths will always fail.
+ For example, attempting to use `<nixpkgs>` will produce:
+
+ error: file 'nixpkgs' was not found in the Nix search path
+
- [`NIX_IGNORE_SYMLINK_STORE`]{#env-NIX_IGNORE_SYMLINK_STORE}\
Normally, the Nix store directory (typically `/nix/store`) is not
allowed to contain any symlink components. This is to prevent