mirror of
https://github.com/NixOS/nix.git
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Document user files of nix
This commit is contained in:
Alexander Bantyev
Valentin Gagarin
parent
946fd29422
commit
8a93b5a551
2
.gitignore
vendored
2
.gitignore
vendored
@ -51,6 +51,8 @@ perl/Makefile.config
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/src/nix/nix
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/src/nix/doc
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# /src/nix-env/
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/src/nix-env/nix-env
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@ -11,6 +11,7 @@ man-pages := $(foreach n, \
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nix-prefetch-url.1 nix-channel.1 \
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nix-hash.1 nix-copy-closure.1 \
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nix.conf.5 nix-daemon.8 \
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nix-user-profiles.5 \
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, $(d)/$(n))
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# man pages for subcommands
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@ -85,6 +86,12 @@ $(d)/nix.conf.5: $(d)/src/command-ref/conf-file.md
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$(trace-gen) lowdown -sT man --nroff-nolinks -M section=5 $^.tmp -o $@
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@rm $^.tmp
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$(d)/nix-user-profiles.5: $(d)/src/command-ref/files/user-profiles.md
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@printf "Title: %s\n\n" "$$(basename $@ .5)" > $^.tmp
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@cat $^ >> $^.tmp
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$(trace-gen) lowdown -sT man --nroff-nolinks -M section=5 $^.tmp -o $@
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@rm $^.tmp
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$(d)/src/SUMMARY.md: $(d)/src/SUMMARY.md.in $(d)/src/command-ref/new-cli $(d)/src/contributing/experimental-feature-descriptions.md
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@cp $< $@
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@$(call process-includes,$@,$@)
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@ -91,7 +91,10 @@
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{{#include ./command-ref/new-cli/SUMMARY.md}}
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- [Files](command-ref/files.md)
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- [nix.conf](command-ref/conf-file.md)
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- [Architecture](architecture/architecture.md)
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- [User profiles](command-ref/files/user-profiles.md)
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- [Channels](command-ref/files/channels.md)
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- [Default Nix expression](command-ref/files/default-nix-expression.md)
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- [Archititecture](architecture.md)
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- [Glossary](glossary.md)
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- [Contributing](contributing/contributing.md)
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- [Hacking](contributing/hacking.md)
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26
doc/manual/src/command-ref/files/channels.md
Normal file
26
doc/manual/src/command-ref/files/channels.md
Normal file
@ -0,0 +1,26 @@
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# Channels
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A directory containing symlinks to Nix channels, managed by [`nix-channel`].
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- `$NIX_STATE_DIR/profiles/per-user/root/channels` for `root`
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- `$XDG_STATE_HOME/nix/profiles/channels` for regular users
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[`nix-channel`] uses a [profile](@docroot@/command-ref/files/user-profiles.md) to store channels.
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This profile contains symlinks to the contents of those channels.
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## Subscribed channels
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The list of subscribed channels is stored in
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- `~/.nix-channels`
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- `$XDG_STATE_HOME/nix/channels` if [`use-xdg-base-directories`] is set to `true`
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in the following format:
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```
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<url> <name>
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...
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```
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[`nix-channel`]: @docroot@/command-ref/nix-channel.md
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[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories
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52
doc/manual/src/command-ref/files/default-nix-expression.md
Normal file
52
doc/manual/src/command-ref/files/default-nix-expression.md
Normal file
@ -0,0 +1,52 @@
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# Default Nix expression
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The source for the default [Nix expressions](@docroot@/language/index.md) used by [`nix-env`].
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- `~/.nix-defexpr`
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- `$XDG_STATE_HOME/nix/defexpr` if [`use-xdg-base-directories`] is set to `true`.
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It is loaded as follows:
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- If the default expression is a file, it is loaded as a Nix expression.
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- If the default expression is a directory containing a `default.nix` file, that `default.nix` file is loaded as a Nix expression.
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- If the default expression is a directory without a `default.nix` file, then its contents (both files and subdirectories) are loaded as Nix expressions.
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The expressions are combined into a single attribute set, each expression under an attribute with the same name as the original file or subdirectory.
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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.
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Then, the resulting expression is interpreted like this:
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- If the expression is an attribute set, it is used as the default Nix expression.
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- If the expression is a function, an empty set is passed as argument and the return value is used as the default Nix expression.
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For example, if the default expression contains two files, `foo.nix` and `bar.nix`, then the default Nix expression will be equivalent to
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```nix
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{
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foo = import ~/.nix-defexpr/foo.nix;
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bar = import ~/.nix-defexpr/bar.nix;
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}
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```
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The file `manifest.nix` is always ignored.
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The command [`nix-channel`] places a symlink to the user's current [channels profile](@docroot@/command-ref/files/channels.md) in this directory.
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This makes all subscribed channels available as attributes in the default expression.
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## User channel link
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A symlink that ensures that [`nix-env`] can find your channels.
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- `~/.nix-defexpr/channels`
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- `$XDG_STATE_HOME/defexpr/channels` if [`use-xdg-base-directories`] is set to `true`.
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This symlink points to:
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- `$XDG_STATE_HOME/profiles/channels` for regular users
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- `$NIX_STATE_DIR/profiles/per-user/root/channels` for `root`
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In a multi-user installation, you may also have `~/.nix-defexpr/channels_root`, which links to the channels of the root user.[`nix-env`]: ../nix-env.md
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[`nix-env`]: @docroot@/command-ref/nix-env.md
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[`nix-channel`]: @docroot@/command-ref/nix-channel.md
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[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories
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16
doc/manual/src/command-ref/files/user-profile-link.md
Normal file
16
doc/manual/src/command-ref/files/user-profile-link.md
Normal file
@ -0,0 +1,16 @@
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# User profile link
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A symbolic link to the user's current profile.
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- `~/.nix-profile`
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- `$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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- `$XDG_STATE_HOME/nix/profiles/default` for regular users
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- `$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.
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[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories
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273
doc/manual/src/command-ref/files/user-profiles.md
Normal file
273
doc/manual/src/command-ref/files/user-profiles.md
Normal file
@ -0,0 +1,273 @@
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# User profiles
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A directory that contains links to user profiles managed by [`nix-env`] and [`nix profile`].
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- `$NIX_STATE_DIR/profiles/per-user/root` if the user is `root`
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- `$XDG_STATE_HOME/nix/profiles` otherwise
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A profile is a directory of symlinks to files in the Nix store.
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## Profile compatibility
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> **Warning**
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>
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> `nix profile` is experimental.
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> Once you have used `nix profile` you can no longer use `nix-env` without first deleting `$XDG_STATE_HOME/nix/profiles/profile`
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Once you installed a package with `nix profile`, you get the following
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error message when using `nix-env`:
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```console
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$ nix-env -f '<nixpkgs>' -iA 'hello'
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error: --- Error ----------------------------------------------------------------------------------------------------------------- nix-env
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profile '/home/alice/.local/state/nix/profiles/profile' is incompatible with 'nix-env'; please use 'nix profile' instead
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```
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To migrate back to `nix-env` you can delete your current profile:
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> **Warning**
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>
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> This will delete packages that have been installed before, so you may want to back this information before running the command.
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```console
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$ rm -rf "${XDG_STATE_HOME-$HOME/.local/state}/nix/profiles/profile"
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```
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## Filesystem layout
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Profiles are versioned as follows. When using profile *path*, *path*
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is a symlink to *path*`-`*N*, where *N* is the current *version* of
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the profile. In turn, *path*`-`*N* is a symlink to a path in the Nix
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store. 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.json
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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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## Manifest
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The manifest file records the provenance of the packages that are installed in this version of the profile.
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It is different between [`nix-env`] and [`nix profile`].
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### `manifest.nix`
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Used by [`nix-env`]. This is an example of how this file might look like after installing `hello` from nixpkgs.
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```nix
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[{
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meta = {
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available = true;
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broken = false;
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changelog =
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"https://git.savannah.gnu.org/cgit/hello.git/plain/NEWS?h=v2.12.1";
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description = "A program that produces a familiar, friendly greeting";
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homepage = "https://www.gnu.org/software/hello/manual/";
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insecure = false;
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license = {
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deprecated = false;
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free = true;
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fullName = "GNU General Public License v3.0 or later";
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redistributable = true;
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shortName = "gpl3Plus";
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spdxId = "GPL-3.0-or-later";
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url = "https://spdx.org/licenses/GPL-3.0-or-later.html";
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};
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longDescription = ''
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GNU Hello is a program that prints "Hello, world!" when you run it.
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It is fully customizable.
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'';
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maintainers = [{
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email = "edolstra+nixpkgs@gmail.com";
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github = "edolstra";
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githubId = 1148549;
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name = "Eelco Dolstra";
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}];
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name = "hello-2.12.1";
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outputsToInstall = [ "out" ];
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platforms = [
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"i686-cygwin"
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"x86_64-cygwin"
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"x86_64-darwin"
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"i686-darwin"
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"aarch64-darwin"
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"armv7a-darwin"
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"i686-freebsd13"
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"x86_64-freebsd13"
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"aarch64-genode"
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"i686-genode"
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"x86_64-genode"
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"x86_64-solaris"
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"js-ghcjs"
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"aarch64-linux"
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"armv5tel-linux"
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"armv6l-linux"
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"armv7a-linux"
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"armv7l-linux"
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"i686-linux"
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"m68k-linux"
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"microblaze-linux"
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"microblazeel-linux"
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"mipsel-linux"
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"mips64el-linux"
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"powerpc64-linux"
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"powerpc64le-linux"
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"riscv32-linux"
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"riscv64-linux"
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"s390-linux"
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"s390x-linux"
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"x86_64-linux"
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"mmix-mmixware"
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"aarch64-netbsd"
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"armv6l-netbsd"
|
||||
"armv7a-netbsd"
|
||||
"armv7l-netbsd"
|
||||
"i686-netbsd"
|
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"m68k-netbsd"
|
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"mipsel-netbsd"
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"powerpc-netbsd"
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"riscv32-netbsd"
|
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"riscv64-netbsd"
|
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"x86_64-netbsd"
|
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"aarch64_be-none"
|
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"aarch64-none"
|
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"arm-none"
|
||||
"armv6l-none"
|
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"avr-none"
|
||||
"i686-none"
|
||||
"microblaze-none"
|
||||
"microblazeel-none"
|
||||
"msp430-none"
|
||||
"or1k-none"
|
||||
"m68k-none"
|
||||
"powerpc-none"
|
||||
"powerpcle-none"
|
||||
"riscv32-none"
|
||||
"riscv64-none"
|
||||
"rx-none"
|
||||
"s390-none"
|
||||
"s390x-none"
|
||||
"vc4-none"
|
||||
"x86_64-none"
|
||||
"i686-openbsd"
|
||||
"x86_64-openbsd"
|
||||
"x86_64-redox"
|
||||
"wasm64-wasi"
|
||||
"wasm32-wasi"
|
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"x86_64-windows"
|
||||
"i686-windows"
|
||||
];
|
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position =
|
||||
"/nix/store/7niq32w715567hbph0q13m5lqna64c1s-nixos-unstable.tar.gz/nixos-unstable.tar.gz/pkgs/applications/misc/hello/default.nix:34";
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||||
unfree = false;
|
||||
unsupported = false;
|
||||
};
|
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name = "hello-2.12.1";
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||||
out = {
|
||||
outPath = "/nix/store/260q5867crm1xjs4khgqpl6vr9kywql1-hello-2.12.1";
|
||||
};
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outPath = "/nix/store/260q5867crm1xjs4khgqpl6vr9kywql1-hello-2.12.1";
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||||
outputs = [ "out" ];
|
||||
system = "x86_64-linux";
|
||||
type = "derivation";
|
||||
}]
|
||||
```
|
||||
|
||||
Each element in this list corresponds to an installed package.
|
||||
It incorporates some attributes of the original package derivation, including `meta`, `name`, `out`, `outPath`, `outputs`, `system`.
|
||||
This is used by Nix for querying and updating the package.
|
||||
|
||||
### `manifest.json`
|
||||
|
||||
Used by [`nix profile`]. This is an example of what the file might look like after installing `zoom-us` from nixpkgs:
|
||||
|
||||
```json
|
||||
{
|
||||
"version": 1,
|
||||
"elements": [
|
||||
{
|
||||
"active": true,
|
||||
"attrPath": "legacyPackages.x86_64-linux.zoom-us",
|
||||
"originalUrl": "flake:nixpkgs",
|
||||
"storePaths": [
|
||||
"/nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927"
|
||||
],
|
||||
"uri": "github:NixOS/nixpkgs/13d0c311e3ae923a00f734b43fd1d35b47d8943a"
|
||||
},
|
||||
…
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
Each object in the array `elements` denotes an installed package and
|
||||
has the following fields:
|
||||
|
||||
* `originalUrl`: The [flake reference](@docroot@/command-ref/new-cli/nix3-flake.md) specified by
|
||||
the user at the time of installation (e.g. `nixpkgs`). This is also
|
||||
the flake reference that will be used by `nix profile upgrade`.
|
||||
|
||||
* `uri`: The locked flake reference to which `originalUrl` resolved.
|
||||
|
||||
* `attrPath`: The flake output attribute that provided this
|
||||
package. Note that this is not necessarily the attribute that the
|
||||
user specified, but the one resulting from applying the default
|
||||
attribute paths and prefixes; for instance, `hello` might resolve to
|
||||
`packages.x86_64-linux.hello` and the empty string to
|
||||
`packages.x86_64-linux.default`.
|
||||
|
||||
* `storePath`: The paths in the Nix store containing the package.
|
||||
|
||||
* `active`: Whether the profile contains symlinks to the files of this
|
||||
package. If set to false, the package is kept in the Nix store, but
|
||||
is not "visible" in the profile's symlink tree.
|
||||
|
||||
## User profile link
|
||||
|
||||
A symbolic link to the user's current profile.
|
||||
|
||||
- `~/.nix-profile`
|
||||
- `$XDG_STATE_HOME/nix/profile` if [`use-xdg-base-directories`] is set to `true`.
|
||||
|
||||
By default, this symlink points to:
|
||||
|
||||
- `$XDG_STATE_HOME/nix/profiles/profile` for regular users
|
||||
- `$NIX_STATE_DIR/profiles/per-user/root/profile` for `root`
|
||||
|
||||
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.
|
||||
The [installer](@docroot@/installation/installing-binary.md) sets this up by default, unless you enable [`use-xdg-base-directories`].
|
||||
|
||||
[`nix-env`]: @docroot@/command-ref/nix-env.md
|
||||
[`nix profile`]: @docroot@/command-ref/new-cli/nix3-profile.md
|
||||
[`use-xdg-base-directories`]: @docroot@/command-ref/conf-file.md#conf-use-xdg-base-directories
|
||||
@ -22,6 +22,9 @@ This command has the following operations:
|
||||
channels. If *name* is omitted, it defaults to the last component of
|
||||
*url*, with the suffixes `-stable` or `-unstable` removed.
|
||||
|
||||
A channel URL must point to a directory containing a file `nixexprs.tar.gz`.
|
||||
At the top level, that tarball must contain a single directory with a `default.nix` file that serves as the channel’s entry point.
|
||||
|
||||
- `--remove` *name*\
|
||||
Removes the channel named *name* from the list of subscribed
|
||||
channels.
|
||||
@ -49,6 +52,7 @@ The list of subscribed channels is stored in `~/.nix-channels`.
|
||||
|
||||
{{#include ./env-common.md}}
|
||||
|
||||
|
||||
# Examples
|
||||
|
||||
To subscribe to the Nixpkgs channel and install the GNU Hello package:
|
||||
@ -71,30 +75,3 @@ switching from generation 483 to 482
|
||||
$ nix-instantiate --eval -E '(import <nixpkgs> {}).lib.version'
|
||||
"14.04.526.dbadfad"
|
||||
```
|
||||
|
||||
# Files
|
||||
|
||||
- `${XDG_STATE_HOME-$HOME/.local/state}/nix/profiles/channels`\
|
||||
`nix-channel` uses a `nix-env` profile to keep track of previous
|
||||
versions of the subscribed channels. Every time you run `nix-channel
|
||||
--update`, a new channel generation (that is, a symlink to the
|
||||
channel Nix expressions in the Nix store) is created. This enables
|
||||
`nix-channel --rollback` to revert to previous versions.
|
||||
|
||||
- `~/.nix-defexpr/channels`\
|
||||
This is a symlink to
|
||||
`${XDG_STATE_HOME-$HOME/.local/state}/nix/profiles/channels`. It ensures that
|
||||
`nix-env` can find your channels. In a multi-user installation, you
|
||||
may also have `~/.nix-defexpr/channels_root`, which links to the
|
||||
channels of the root user.
|
||||
|
||||
# Channel format
|
||||
|
||||
A channel URL should point to a directory containing the following
|
||||
files:
|
||||
|
||||
- `nixexprs.tar.xz`\
|
||||
A tarball containing Nix expressions and files referenced by them
|
||||
(such as build scripts and patches). At the top level, the tarball
|
||||
should contain a single directory. That directory must contain a
|
||||
file `default.nix` that serves as the channel’s “entry point”.
|
||||
|
||||
@ -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}}
|
||||
BIN
src/libexpr/tests/libexpr-tests
Executable file
BIN
src/libexpr/tests/libexpr-tests
Executable file
Binary file not shown.
@ -972,7 +972,7 @@ public:
|
||||
this, false, "use-xdg-base-directories",
|
||||
R"(
|
||||
If set to `true`, Nix will conform to the [XDG Base Directory Specification] for files in `$HOME`.
|
||||
The environment variables used to implement this are documented in the [Environment Variables section](@docroot@/installation/env-variables.md).
|
||||
The environment variables used to implement this are documented in the [Environment Variables section](@docroot@/command-ref/env-common.md).
|
||||
|
||||
[XDG Base Directory Specification]: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
|
||||
|
||||
|
||||
BIN
src/libstore/tests/libstore-tests
Executable file
BIN
src/libstore/tests/libstore-tests
Executable file
Binary file not shown.
BIN
src/libutil/tests/libutil-tests
Executable file
BIN
src/libutil/tests/libutil-tests
Executable file
Binary file not shown.
@ -7,100 +7,10 @@ profile is a set of packages that can be installed and upgraded
|
||||
independently from each other. Nix profiles are versioned, allowing
|
||||
them to be rolled back easily.
|
||||
|
||||
# Default profile
|
||||
# Files
|
||||
|
||||
The default profile used by `nix profile` is `$HOME/.nix-profile`,
|
||||
which, if it does not exist, is created as a symlink to
|
||||
`/nix/var/nix/profiles/default` if Nix is invoked by the
|
||||
`root` user, or `${XDG_STATE_HOME-$HOME/.local/state}/nix/profiles/profile` otherwise.
|
||||
See [the "User Profiles" documentation page](@docroot@/command-ref/files/user-profiles.md).
|
||||
|
||||
You can specify another profile location using `--profile` *path*.
|
||||
|
||||
# Filesystem layout
|
||||
|
||||
Profiles are versioned as follows. When using profile *path*, *path*
|
||||
is a symlink to *path*`-`*N*, where *N* is the current *version* of
|
||||
the profile. In turn, *path*`-`*N* is a symlink to a path in the Nix
|
||||
store. For example:
|
||||
|
||||
```console
|
||||
$ ls -l ~alice/.local/state/nix/profiles/profile*
|
||||
lrwxrwxrwx 1 alice users 14 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile -> profile-7-link
|
||||
lrwxrwxrwx 1 alice users 51 Oct 28 16:18 /home/alice/.local/state/nix/profiles/profile-5-link -> /nix/store/q69xad13ghpf7ir87h0b2gd28lafjj1j-profile
|
||||
lrwxrwxrwx 1 alice users 51 Oct 29 13:20 /home/alice/.local/state/nix/profiles/profile-6-link -> /nix/store/6bvhpysd7vwz7k3b0pndn7ifi5xr32dg-profile
|
||||
lrwxrwxrwx 1 alice users 51 Nov 25 14:35 /home/alice/.local/state/nix/profiles/profile-7-link -> /nix/store/mp0x6xnsg0b8qhswy6riqvimai4gm677-profile
|
||||
```
|
||||
|
||||
Each of these symlinks is a root for the Nix garbage collector.
|
||||
|
||||
The contents of the store path corresponding to each version of the
|
||||
profile is a tree of symlinks to the files of the installed packages,
|
||||
e.g.
|
||||
|
||||
```console
|
||||
$ ll -R ~eelco/.local/state/nix/profiles/profile-7-link/
|
||||
/home/eelco/.local/state/nix/profiles/profile-7-link/:
|
||||
total 20
|
||||
dr-xr-xr-x 2 root root 4096 Jan 1 1970 bin
|
||||
-r--r--r-- 2 root root 1402 Jan 1 1970 manifest.json
|
||||
dr-xr-xr-x 4 root root 4096 Jan 1 1970 share
|
||||
|
||||
/home/eelco/.local/state/nix/profiles/profile-7-link/bin:
|
||||
total 20
|
||||
lrwxrwxrwx 5 root root 79 Jan 1 1970 chromium -> /nix/store/ijm5k0zqisvkdwjkc77mb9qzb35xfi4m-chromium-86.0.4240.111/bin/chromium
|
||||
lrwxrwxrwx 7 root root 87 Jan 1 1970 spotify -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/bin/spotify
|
||||
lrwxrwxrwx 3 root root 79 Jan 1 1970 zoom-us -> /nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927/bin/zoom-us
|
||||
|
||||
/home/eelco/.local/state/nix/profiles/profile-7-link/share/applications:
|
||||
total 12
|
||||
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
|
||||
lrwxrwxrwx 7 root root 110 Jan 1 1970 spotify.desktop -> /nix/store/w9182874m1bl56smps3m5zjj36jhp3rn-spotify-1.1.26.501.gbe11e53b-15/share/applications/spotify.desktop
|
||||
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
|
||||
|
||||
…
|
||||
```
|
||||
|
||||
The file `manifest.json` records the provenance of the packages that
|
||||
are installed in this version of the profile. It looks like this:
|
||||
|
||||
```json
|
||||
{
|
||||
"version": 1,
|
||||
"elements": [
|
||||
{
|
||||
"active": true,
|
||||
"attrPath": "legacyPackages.x86_64-linux.zoom-us",
|
||||
"originalUrl": "flake:nixpkgs",
|
||||
"storePaths": [
|
||||
"/nix/store/wbhg2ga8f3h87s9h5k0slxk0m81m4cxl-zoom-us-5.3.469451.0927"
|
||||
],
|
||||
"uri": "github:NixOS/nixpkgs/13d0c311e3ae923a00f734b43fd1d35b47d8943a"
|
||||
},
|
||||
…
|
||||
]
|
||||
}
|
||||
```
|
||||
|
||||
Each object in the array `elements` denotes an installed package and
|
||||
has the following fields:
|
||||
|
||||
* `originalUrl`: The [flake reference](./nix3-flake.md) specified by
|
||||
the user at the time of installation (e.g. `nixpkgs`). This is also
|
||||
the flake reference that will be used by `nix profile upgrade`.
|
||||
|
||||
* `uri`: The locked flake reference to which `originalUrl` resolved.
|
||||
|
||||
* `attrPath`: The flake output attribute that provided this
|
||||
package. Note that this is not necessarily the attribute that the
|
||||
user specified, but the one resulting from applying the default
|
||||
attribute paths and prefixes; for instance, `hello` might resolve to
|
||||
`packages.x86_64-linux.hello` and the empty string to
|
||||
`packages.x86_64-linux.default`.
|
||||
|
||||
* `storePath`: The paths in the Nix store containing the package.
|
||||
|
||||
* `active`: Whether the profile contains symlinks to the files of this
|
||||
package. If set to false, the package is kept in the Nix store, but
|
||||
is not "visible" in the profile's symlink tree.
|
||||
This page can be viewed offline with **`man 5 nix3-user-profiles`**.
|
||||
|
||||
)""
|
||||
|
||||
Loading…
Reference in New Issue
Block a user