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75 lines
3.8 KiB
Markdown
75 lines
3.8 KiB
Markdown
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## Profiles
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A directory that contains links to profiles managed by [`nix-env`] and [`nix profile`]:
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- `$XDG_STATE_HOME/nix/profiles` for regular users
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- `$NIX_STATE_DIR/profiles/per-user/root` if the user is `root`
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A profile is a directory of symlinks to files in the Nix store.
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### Filesystem layout
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Profiles are versioned as follows. When using a profile named *path*, *path* is a symlink to *path*`-`*N*`-link`, where *N* is the version of the profile.
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In turn, *path*`-`*N*`-link` is a symlink to a path in the Nix store.
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For example:
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```console
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$ ls -l ~alice/.local/state/nix/profiles/profile*
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lrwxrwxrwx 1 alice users 14 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile -> profile-7-link
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lrwxrwxrwx 1 alice users 51 Oct 28 16:18 /home/alice/.local/state/nix/profiles/profile-5-link -> /nix/store/q69xad13ghpf7ir87h0b2gd28lafjj1j-profile
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lrwxrwxrwx 1 alice users 51 Oct 29 13:20 /home/alice/.local/state/nix/profiles/profile-6-link -> /nix/store/6bvhpysd7vwz7k3b0pndn7ifi5xr32dg-profile
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lrwxrwxrwx 1 alice users 51 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile-7-link -> /nix/store/mp0x6xnsg0b8qhswy6riqvimai4gm677-profile
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```
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Each of these symlinks is a root for the Nix garbage collector.
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The contents of the store path corresponding to each version of the
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profile is a tree of symlinks to the files of the installed packages,
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e.g.
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```console
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$ ll -R ~eelco/.local/state/nix/profiles/profile-7-link/
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/home/eelco/.local/state/nix/profiles/profile-7-link/:
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total 20
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dr-xr-xr-x 2 root root 4096 Jan 1 1970 bin
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-r--r--r-- 2 root root 1402 Jan 1 1970 manifest.nix
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dr-xr-xr-x 4 root root 4096 Jan 1 1970 share
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/home/eelco/.local/state/nix/profiles/profile-7-link/bin:
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total 20
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lrwxrwxrwx 5 root root 79 Jan 1 1970 chromium -> /nix/store/ijm5k0zqisvkdwjkc77mb9qzb35xfi4m-chromium-86.0.4240.111/bin/chromium
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lrwxrwxrwx 7 root root 87 Jan 1 1970 spotify -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/bin/spotify
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lrwxrwxrwx 3 root root 79 Jan 1 1970 zoom-us -> /nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927/bin/zoom-us
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/home/eelco/.local/state/nix/profiles/profile-7-link/share/applications:
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total 12
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lrwxrwxrwx 4 root root 120 Jan 1 1970 chromium-browser.desktop -> /nix/store/4cf803y4vzfm3gyk3vzhzb2327v0kl8a-chromium-unwrapped-86.0.4240.111/share/applications/chromium-browser.desktop
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lrwxrwxrwx 7 root root 110 Jan 1 1970 spotify.desktop -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/share/applications/spotify.desktop
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lrwxrwxrwx 3 root root 107 Jan 1 1970 us.zoom.Zoom.desktop -> /nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927/share/applications/us.zoom.Zoom.desktop
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…
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```
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Each profile version contains a manifest file:
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- [`manifest.nix`](@docroot@/command-ref/files/manifest.nix.md) used by [`nix-env`](@docroot@/command-ref/nix-env.md).
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- [`manifest.json`](@docroot@/command-ref/files/manifest.json.md) used by [`nix profile`](@docroot@/command-ref/new-cli/nix3-profile.md) (experimental).
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## User profile link
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A symbolic link to the user's current profile:
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- `~/.nix-profile`
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- `$XDG_STATE_HOME/nix/profile` if [`use-xdg-base-directories`] is set to `true`.
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By default, this symlink points to:
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- `$XDG_STATE_HOME/nix/profiles/profile` for regular users
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- `$NIX_STATE_DIR/profiles/per-user/root/profile` for `root`
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The `PATH` environment variable should include `/bin` subdirectory of the profile link (e.g. `~/.nix-profile/bin`) for the user environment to be visible to the user.
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The [installer](@docroot@/installation/installing-binary.md) sets this up by default, unless you enable [`use-xdg-base-directories`].
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[`nix-env`]: @docroot@/command-ref/nix-env.md
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[`nix profile`]: @docroot@/command-ref/new-cli/nix3-profile.md
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[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories
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