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Merge pull request #25 from MatthewCroughan/mc/flocking

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Add locking via flock(1)
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MatthewCroughan 2022-09-12 18:58:39 +01:00 • committed by GitHub
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1 changed files with 3 additions and 3 deletions
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6
flake.nix
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@ -52,14 +52,14 @@
'' + (if hermetic then ''
echo "🤞 Activating configuration hermetically on ${machine} via ssh:"
( set -x; ${nix} copy --derivation ${nixos-rebuild} --to ssh://${user}@${host} )
( set -x; ${openssh} -t ${user}@${host} 'sudo nix-store --realise ${nixos-rebuild} && sudo ${nixos-rebuild} ${switch} --flake ${flake}#${machine}' )
( set -x; ${openssh} -t ${user}@${host} "sudo flock -w 60 /dev/shm/nixinate-${machine} -c 'nix-store --realise ${nixos-rebuild} && sudo ${nixos-rebuild} ${switch} --flake ${flake}#${machine}'" )
'' else ''
echo "🤞 Activating configuration non-hermetically on ${machine} via ssh:"
( set -x; ${openssh} -t ${user}@${host} 'sudo nixos-rebuild ${switch} --flake ${flake}#${machine}' )
( set -x; ${openssh} -t ${user}@${host} "sudo flock -w 60 /dev/shm/nixinate-${machine} -c 'nixos-rebuild ${switch} --flake ${flake}#${machine}'" )
'')
else ''
echo "🔨 Building system closure locally, copying it to remote store and activating it:"
( set -x; NIX_SSHOPTS="-t" ${nixos-rebuild} ${switch} --flake ${flake}#${machine} --target-host ${user}@${host} --use-remote-sudo ${optionalString substituteOnTarget "-s"} )
( set -x; NIX_SSHOPTS="-t" flock -w 60 /dev/shm/nixinate-${machine} -c '${nixos-rebuild} ${switch} --flake ${flake}#${machine} --target-host ${user}@${host} --use-remote-sudo ${optionalString substituteOnTarget "-s"}' )
'');
in final.writeScript "deploy-${machine}.sh" script;
in