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Fix XDG_CONFIG_DIRS fallback

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According to XDG Base Directory Specification,
it should fall back to /etc/xdg when the env var is not present.
This commit is contained in:
Jan Tojnar 2021-11-17 14:28:43 +01:00
parent 480c883f36
commit e96faadcd6
2 changed files with 4 additions and 3 deletions
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5
doc/manual/src/command-ref/conf-file-prefix.md
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@ -16,8 +16,9 @@ By default Nix reads settings from the following places:
will be loaded in reverse order. will be loaded in reverse order.
Otherwise it will look for `nix/nix.conf` files in `XDG_CONFIG_DIRS` Otherwise it will look for `nix/nix.conf` files in `XDG_CONFIG_DIRS`
and `XDG_CONFIG_HOME`. If these are unset, it will look in and `XDG_CONFIG_HOME`. If unset, `XDG_CONFIG_DIRS` defaults to
`$HOME/.config/nix/nix.conf`. `/etc/xdg`, and `XDG_CONFIG_HOME` defaults to `$HOME/.config`
as per [XDG Base Directory Specification](https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html).
- If `NIX_CONFIG` is set, its contents is treated as the contents of - If `NIX_CONFIG` is set, its contents is treated as the contents of
a configuration file. a configuration file.

2
src/libutil/util.cc
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@ -562,7 +562,7 @@ Path getConfigDir()
std::vector<Path> getConfigDirs() std::vector<Path> getConfigDirs()
{ {
Path configHome = getConfigDir(); Path configHome = getConfigDir();
string configDirs = getEnv("XDG_CONFIG_DIRS").value_or(""); string configDirs = getEnv("XDG_CONFIG_DIRS").value_or("/etc/xdg");
std::vector<Path> result = tokenizeString<std::vector<string>>(configDirs, ":"); std::vector<Path> result = tokenizeString<std::vector<string>>(configDirs, ":");
result.insert(result.begin(), configHome); result.insert(result.begin(), configHome);
return result; return result;