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systemd,launchd match nixos open files limit
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it was bumped in https://github.com/NixOS/nixpkgs/pull/176558
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This matches the behavior of bash. We don’t want to add a space after
completion on attrs. Uses -S.
Switches to new compadd style comppletions instead of _describe.
Shouldn’t have any negative issues from what I can tell.
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https://github.com/NixOS/nixpkgs/blob/5628480acda2985cc334d0c5ec85512858ed60f9/nixos/modules/services/misc/nix-daemon.nix#L737
Closes https://github.com/NixOS/nix/issues/6007
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Shell completion improvements
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Users may want to mount a filesystem just for the Nix database, with
the filesystem's parameters specially tuned for sqlite. For example, on
ZFS you might set the recordsize to 64k after changing the database's
page size to 65536.
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nix-daemon.socket is used to socket-activate nix-daemon.service when
/nix/var/nix/daemon-socket/socket is accessed.
In container usecases, sometimes /nix/var/nix/daemon-socket is
bind-mounted read-only into the container.
In these cases, we want to skip starting nix-daemon.socket.
However, since systemd 250, `ConditionPathIsReadWrite` is also not met
if /nix/var/nix/daemon-socket doesn't exist at all. This means, a
regular NixOS system will skip starting nix-daemon.socket:
> [ 237.187747] systemd[1]: Nix Daemon Socket was skipped because of a failed condition check (ConditionPathIsReadWrite=/nix/var/nix/daemon-socket).
To prevent this from happening, ship a tmpfiles file that'll cause the
directory to be created if it doesn't exist already.
In the case of NixOS, we can just add Nix to `systemd.tmpfiles.packages`
and have these files picked up automatically.
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Closes: #6246
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Allows completing `nix build ~/flake#<Tab>`.
We can implement expansion for `~user` later if needed.
Not using wordexp(3) since that expands way too much.
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This fixes weird issues where e.g.
nix build -L .#<tab>
deletes the current line from the prompt.
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Don't insert spaces when completing attribute paths
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The default maxfiles on macOS 11 and macOS 12 is 256, which is too low
for nix to work:
```
$ launchctl limit maxfiles
maxfiles 256 unlimited
```
Set NumberOfFiles of nix-daemon to 4096 to avoid `Too many open files`
error.
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Apply OS checks to host platform, not build
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This is only rudimentary support as allowed by `NIX_GET_COMPLETIONS`.
In the future, we could use complete’s `--wraps` argument to autocomplete arguments for programs after `nix shell -c`.
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Previously, the build system used uname(1) output when it wanted to
check the operating system it was being built for, which meant that it
didn't take into-account cross-compilation when the build and host
operating systems were different.
To fix this, instead of consulting uname output, we consult the host
triple, specifically the third "kernel" part.
For "kernel"s with stable ABIs, like Linux or Cygwin, we can use a
simple ifeq to test whether we're compiling for that system, but for
other platforms, like Darwin, FreeBSD, or Solaris, we have to use a
more complicated check to take into account the version numbers at the
end of the "kernel"s. I couldn't find a way to just strip these
version numbers in GNU Make without shelling out, which would be even
more ugly IMO. Because these checks differ between kernels, and the
patsubst ones are quite fiddly, I've added variables for each host OS
we might want to check to make them easier to reuse.
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Installed site-functions need to be run directly, not via compdef.
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Before:
UID PID PPID C STIME TTY TIME CMD
0 1737 1 0 2:28PM ?? 0:00.00 /bin/sh -c /bin/wait4path /nix/var/nix/profiles/default/bin/nix-daemon && /nix/var/nix/profiles/default/bin/nix-daemon
0 1739 1737 0 2:28PM ?? 0:00.05 /nix/var/nix/profiles/default/bin/nix-daemon
After:
UID PID PPID C STIME TTY TIME CMD
0 1763 1 0 2:29PM ?? 0:00.05 /nix/var/nix/profiles/default/bin/nix-daemon
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
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Based on @clhodapp's suggestion in https://github.com/spwhitt/nix-zsh-completions/issues/32#issuecomment-705315356 and adapted to use the description of the completions
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Make nix output completions in the form `completion\tdescription`.
This can't be used by bash (afaik), but other shells like zsh or fish
can display it along the completion choices
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Mac OS multi-user installations are currently broken because all requests
made by nix-daemon to the binary cache fail with:
```
unable to download ... Problem with the SSL CA cert (path? access rights?) (77).
```
This change ensures that the nix-daemon knows where to find the SSL CA cert file.
Fixes #2899 and #3261.
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We're calling `wait4path` on the full, resolved `@bindir@/nix-daemon` path.
That means we're hardcoding something like:
/bin/wait4path /nix/store/zs9c5xhp3zv9p23qnjxp87nl5injsi1i-nix-2.3/bin/nix-daemon && /nix/var/nix/profiles/default/bin/nix-daemon
That seems unnecessarily fragile.
It might be better to wait4path on the path we intend to call.
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On Catalina, the /nix filesystem might not be mounted at start time.
To avoid this service not starting, we need to keep the launch agent
outside of the Nix store. A wait4pid will hold for our /nix dir to be
mounted.
Fixes #3125.
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Use wait4path on org.nixos.nix-daemon.plist
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launchd has some weird syntx. Apparently the program needs to be in
the ProgramArguments, as Program appears to be ignored.
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When using a volume, the nix-daemon path may not exist. To avoid this
issue, we must use the wait4path tool. This should solve one of the
issues in multi-user on macOS Catalina.
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Signed-off-by: Piotr Szubiakowski <pszubiak@eso.org>
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Since macOS 10.14 this has become an error, causing problems if the
nix-daemon loads nix during substitution (this is a forked process).
Workaround for #2523.
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We have automated builds at https://hub.docker.com/r/nixos/nix/ now. The master
branch of the "docker" repository is available as "latest". Branches that match
the regular expression "^[0-9.]+$" are pushed to the tag that corresponds to
their branch name. Other branches are ignored.
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Without this the daemon won't be restarted if the process ever dies, for
example when sending a SIGHUP to reload nix.conf.
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The path /root/.nix-profile is a sym-link to /nix/var/nix/profiles/default. The
latter path, however, works for everyone while the former path works only for
root, so we prefer the public path whenever possible.
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- Use the latest Nix version 1.11.14.
- Attempts to download the Nix installation tarball from http://nixos.org
redirect to https these days, which wget doesn't support unless OpenSSL is
available.
- Use addgroup and adduser commands to create the Nix build users.
- Link the Nix profile script into /etc/profile.d, where it's run
automatically.
- Dropped installation of bash and tar. Neither tool is essential for running
Nix.
Use the command "docker build -t nix . && docker run -it --rm nix sh -"
to build and run the Nix docker container.
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