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Document user files of nix

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Alexander Bantyev 2023-02-17 21:57:15 +04:00 • committed by Valentin Gagarin
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doc/manual/src/command-ref/nix-env.md
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@ -83,46 +83,6 @@ match. Here are some examples:
# Files
- `~/.nix-defexpr`\
The source for the default Nix expressions used by the
`--install`, `--upgrade`, and `--query --available` operations to
obtain derivations. The `--file` option may be used to override
this default.
{{#include ./files/default-nix-expression.md}}
If `~/.nix-defexpr` is a file, it is loaded as a Nix expression. If
the expression is a set, it is used as the default Nix expression.
If the expression is a function, an empty set is passed as argument
and the return value is used as the default Nix expression.
If `~/.nix-defexpr` is a directory containing a `default.nix` file,
that file is loaded as in the above paragraph.
If `~/.nix-defexpr` is a directory without a `default.nix` file,
then its contents (both files and subdirectories) are loaded as Nix
expressions. The expressions are combined into a single set, each
expression under an attribute with the same name as the original
file or subdirectory.
For example, if `~/.nix-defexpr` contains two files, `foo.nix` and
`bar.nix`, then the default Nix expression will essentially be
```nix
{
foo = import ~/.nix-defexpr/foo.nix;
bar = import ~/.nix-defexpr/bar.nix;
}
```
The file `manifest.nix` is always ignored. Subdirectories without a
`default.nix` file are traversed recursively in search of more Nix
expressions, but the names of these intermediate directories are not
added to the attribute paths of the default Nix expression.
The command `nix-channel` places symlinks to the downloaded Nix
expressions from each subscribed channel in this directory.
- `~/.nix-profile`\
A symbolic link to the user's current profile. By default, this
symlink points to `prefix/var/nix/profiles/default`. The `PATH`
environment variable should include `~/.nix-profile/bin` for the
user environment to be visible to the user.
{{#include ./files/user-profiles.md}}