packages: reuse local evaluation
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119
packages.nix
119
packages.nix
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@ -93,10 +93,14 @@ lib.attrsets.mapAttrs
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builtins.foldl'
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(result: name:
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let
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discardStringCtx = builtins.unsafeDiscardStringContext;
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host = getHostAddr name;
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target = ''root@"${host}"'';
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rebuildArg = "--flake ${self}#${name} ${overrideInputsArgs} --accept-flake-config";
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hostConfig = self.nixosConfigurations."${name}".config;
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hostPkgs = self.nixosConfigurations."${name}".pkgs;
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declaredRunnerDrvPath = discardStringCtx hostConfig.microvm.declaredRunner.drvPath;
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toplevelOutPath = discardStringCtx hostConfig.system.build.toplevel.outPath;
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# let /var/lib/microvm/*/flake point to the flake-update branch so that
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# `microvm -u $NAME` updates to what hydra built today.
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selfRef = "git+https://gitea.c3d2.de/c3d2/nix-config?ref=flake-update";
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@ -117,7 +121,7 @@ lib.attrsets.mapAttrs
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nix copy --no-check-sigs --to ssh-ng://${target} ${inputPaths}
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# use nixos-rebuild from target config
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nixosRebuild=$(ssh ${target} nix build ${self}#nixosConfigurations.${name}.config.system.build.nixos-rebuild ${overrideInputsArgs} --no-link --json | ${pkgs.jq}/bin/jq -r '.[0].outputs.out')
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nixosRebuild=$(ssh ${target} nix build ${discardStringCtx hostConfig.system.build.nixos-rebuild.outPath} ${overrideInputsArgs} --no-link --json | ${lib.getExe hostPkgs.jq} -r '.[0].outputs.out')
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ssh ${target} $nixosRebuild/bin/nixos-rebuild ${rebuildArg} "$@"
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'';
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@ -129,8 +133,8 @@ lib.attrsets.mapAttrs
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echo Building on Hydra
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ssh root@hydra.serv.zentralwerk.org -- \
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nix build -L -o /tmp/nixos-system-${name} \
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${self}#nixosConfigurations.${name}.config.system.build.toplevel
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nix build -L -o /tmp/nixos-system-${name} ${toplevelOutPath}
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echo Built. Obtaining link to data
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TOPLEVEL=$(ssh root@hydra.serv.zentralwerk.org \
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readlink /tmp/nixos-system-${name})
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@ -153,57 +157,15 @@ lib.attrsets.mapAttrs
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[[ $1 == build || $(ssh ${target} cat /etc/hostname) == ${name} ]]
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# don't re-execute, otherwise we run the targetPlatform locally
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_NIXOS_REBUILD_REEXEC=1 ${pkgs.nixos-rebuild}/bin/nixos-rebuild ${rebuildArg} --target-host ${target} --use-remote-sudo "$@"
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_NIXOS_REBUILD_REEXEC=1 ${lib.getExe hostPkgs.nixos-rebuild} ${rebuildArg} --target-host ${target} --use-remote-sudo "$@"
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'';
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"${name}-cleanup" = pkgs.writeScriptBin "${name}-cleanup" ''
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set -eou pipefail
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ssh ${target} "time nix-collect-garbage -d && time nix-store --optimise"
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'';
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"microvm-update-${name}" = pkgs.writeScriptBin "microvm-update-${name}" (
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if builtins.elem (hostConfig.c3d2.deployment.server or null) [ "server9" "server10" ]
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then ''
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#!${pkgs.runtimeShell} -e
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${hostConfig.system.build.copyToServer} ${inputPaths}
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${hostConfig.system.build.runOnServer} bash -e <<END
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mkdir -p /var/lib/microvms/${name}
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cd /var/lib/microvms/${name}
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chown root:kvm .
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chmod 0775 .
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rm -f old
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[ -e current ] && cp --no-dereference current old
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nix build -L --accept-flake-config -o current \
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${overrideInputsArgs} \
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${self}#nixosConfigurations.${name}.config.microvm.declaredRunner
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echo '${selfRef}' > flake
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[ -e old ] && nix store diff-closures ./old ./current
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ln -sfT \$PWD/current /nix/var/nix/gcroots/microvm/${name}
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ln -sfT \$PWD/booted /nix/var/nix/gcroots/microvm/booted-${name}
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ln -sfT \$PWD/old /nix/var/nix/gcroots/microvm/old-${name}
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systemctl restart microvm@${name}.service
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END
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''
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else throw "${name} is not configured to run on microvm.nix. Is it a physical host or is it deployed in Skyflake?"
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);
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"microvm-update-${name}-local" = pkgs.writeScriptBin "microvm-update-${name}" ''
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#!${pkgs.runtimeShell} -e
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${lib.optionalString (!builtins.elem (hostConfig.c3d2.deployment.server or null) [ "server9" "server10" ]) ''
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echo "MicroVM must be configured to proper server" >&2
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exit 1
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''}
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${hostConfig.system.build.copyToServer} ${hostConfig.microvm.declaredRunner}
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${hostConfig.system.build.runOnServer} bash -e <<END
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} // (let
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createDirsCopyCurrent = name: ''
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mkdir -p /var/lib/microvms/${name}
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cd /var/lib/microvms/${name}
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chown root:kvm .
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@ -211,19 +173,70 @@ lib.attrsets.mapAttrs
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rm -f old
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[ -e current ] && cp --no-dereference current old
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'';
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createSymlinks = name: ''
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if [[ -e old ]]; then
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nix store diff-closures ./old ./current
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echo System package diff:
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${discardStringCtx hostConfig.nix.package.outPath}/bin/nix --extra-experimental-features nix-command store diff-closures ./old ./current || true
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fi
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ln -sfT \$PWD/current /nix/var/nix/gcroots/microvm/${name}
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ln -sfT \$PWD/booted /nix/var/nix/gcroots/microvm/booted-${name}
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ln -sfT \$PWD/old /nix/var/nix/gcroots/microvm/old-${name}
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'';
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in {
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"microvm-update-${name}" = pkgs.writeScriptBin "microvm-update-${name}" (
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if builtins.elem (hostConfig.c3d2.deployment.server or null) [ "server9" "server10" ]
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then ''
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set -eou pipefail
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${hostConfig.system.build.copyToServer} ${inputPaths} ${declaredRunnerDrvPath}
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${hostConfig.system.build.runOnServer} bash -e <<END
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${createDirsCopyCurrent name}
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nix build -L --accept-flake-config -o current ${overrideInputsArgs} ${declaredRunnerDrvPath}
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echo '${selfRef}' > flake
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${createSymlinks name}
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if [[ -z NIXOS_REBUILD ]]; then
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systemctl restart microvm@${name}.service
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fi
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END
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if [[ -n NIXOS_REBUILD ]]; then
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ssh ${target} -- ${toplevelOutPath}/bin/switch-to-configuration "''${@:-switch}"
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fi
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''
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else throw "${name} is not configured to run on microvm.nix. Is it a physical host or is it deployed in Skyflake?"
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);
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"microvm-update-${name}-local" = pkgs.writeScriptBin "microvm-update-${name}" ''
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set -eou pipefail
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${lib.optionalString (!builtins.elem (hostConfig.c3d2.deployment.server or null) [ "server9" "server10" ]) ''
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echo "MicroVM must be configured to proper server" >&2
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exit 1
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''}
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${hostConfig.system.build.copyToServer} ${declaredRunnerDrvPath}
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${hostConfig.system.build.runOnServer} bash -e <<END
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${createDirsCopyCurrent name}
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ln -sfT ${hostConfig.microvm.declaredRunner} current
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echo '${selfRef}' > flake
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[ -e old ] && nix store diff-closures ./old ./current
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ln -sfT \$PWD/current /nix/var/nix/gcroots/microvm/${name}
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ln -sfT \$PWD/booted /nix/var/nix/gcroots/microvm/booted-${name}
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ln -sfT \$PWD/old /nix/var/nix/gcroots/microvm/old-${name}
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${createSymlinks name}
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systemctl restart microvm@${name}.service
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END
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'';
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})
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}))
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{ }
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(builtins.attrNames self.nixosConfigurations) //
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