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nix-super/misc/systemd/local.mk

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Apply OS checks to host platform, not build 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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ifdef HOST_LINUX
Install systemd and Upstart stuff only on Linux
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$(foreach n, nix-daemon.socket nix-daemon.service, $(eval $(call install-file-in, $(d)/$(n), $(prefix)/lib/systemd/system, 0644)))
nix-daemon.conf.in: add tmpfiles file to create nix/daemon-socket directory 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.
2022-03-17 23:59:43 +02:00
$(foreach n, nix-daemon.conf, $(eval $(call install-file-in, $(d)/$(n), $(prefix)/lib/tmpfiles.d, 0644)))
Install systemd and Upstart stuff only on Linux
2014-07-16 12:16:54 +03:00
nix-daemon.conf.in: add tmpfiles file to create nix/daemon-socket directory 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.
2022-03-17 23:59:43 +02:00
clean-files += $(d)/nix-daemon.socket $(d)/nix-daemon.service $(d)/nix-daemon.conf
Add some missing clean-files
2020-10-18 21:32:59 +03:00
Install systemd and Upstart stuff only on Linux
2014-07-16 12:16:54 +03:00
endif
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