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Merged
merged 2 commits into from
Jul 9, 2025
Merged

nixos-anywhere: speed up --build-on remote #559

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7af6792
nixos-anywhere: remove unnecessary `nix copy --derivation`
Enzime Jul 5, 2025
f14e1e4
nixos-anywhere: use SSH store compression to speed up installation
Enzime Jul 5, 2025
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12 changes: 1 addition & 11 deletions src/nixos-anywhere.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@ flake=""
flakeAttr=""
kexecUrl=""
kexecExtraFlags=""
sshStoreSettings=""
sshStoreSettings="compress=true"
enableDebug=""
nixBuildFlags=()
diskoAttr=""
Expand Down Expand Up @@ -711,11 +711,6 @@ runDisko() {
nixCopy --to "ssh://$sshConnection?$sshStoreSettings" "$diskoScript"
elif [[ ${buildOn} == "remote" ]]; then
step Building disko script
# We need to do a nix copy first because nix build doesn't have --no-check-sigs
# Use ssh:// here to avoid https://github.com/NixOS/nix/issues/7359
nixCopy --to "ssh://$sshConnection?$sshStoreSettings" "${flake}#${flakeAttr}.system.build.${diskoMode}Script" \
--derivation --no-check-sigs
# If we don't use ssh-ng here, we get `error: operation 'getFSAccessor' is not supported by store`
diskoScript=$(
nixBuild "${flake}#${flakeAttr}.system.build.${diskoAttr}" \
--eval-store auto --store "ssh-ng://$sshConnection?ssh-key=$tempDir%2Fnixos-anywhere&$sshStoreSettings"
Expand All @@ -733,11 +728,6 @@ nixosInstall() {
nixCopy --to "ssh://$sshConnection?remote-store=local%3Froot=%2Fmnt&$sshStoreSettings" "$nixosSystem"
elif [[ ${buildOn} == "remote" ]]; then
step Building the system closure
# We need to do a nix copy first because nix build doesn't have --no-check-sigs
# Use ssh:// here to avoid https://github.com/NixOS/nix/issues/7359
nixCopy --to "ssh://$sshConnection?remote-store=local%3Froot=%2Fmnt&$sshStoreSettings" "${flake}#${flakeAttr}.system.build.toplevel" \
--derivation --no-check-sigs
# If we don't use ssh-ng here, we get `error: operation 'getFSAccessor' is not supported by store`
nixosSystem=$(
nixBuild "${flake}#${flakeAttr}.system.build.toplevel" \
--eval-store auto --store "ssh-ng://$sshConnection?ssh-key=$tempDir%2Fnixos-anywhere&remote-store=local%3Froot=%2Fmnt&$sshStoreSettings"
Expand Down
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