77 lines
3.6 KiB
Nix
77 lines
3.6 KiB
Nix
{
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description = "Nixinate your systems 🕶️";
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inputs = {
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nixpkgs.url = "github:nixos/nixpkgs/nixos-21.11";
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examples.url = "path:./examples";
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};
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outputs = { self, nixpkgs, examples, ... }:
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let
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version = builtins.substring 0 8 self.lastModifiedDate;
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supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
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forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
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nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; overlays = [ self.overlay ]; });
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in rec
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{
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overlay = final: prev: {
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generateApps = flake:
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let
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machines = builtins.attrNames flake.nixosConfigurations;
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validMachines = final.lib.remove "" (final.lib.forEach machines (x: final.lib.optionalString (flake.nixosConfigurations."${x}"._module.args ? nixinate) "${x}" ));
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mkDeployScript = dry: machine: let
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inherit (builtins) abort;
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n = flake.nixosConfigurations.${machine}._module.args.nixinate;
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user = n.sshUser or "root";
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host = n.host;
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closure = "${flake}#nixosConfigurations.${machine}.config.system.build.toplevel";
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where = n.buildOn or "remote";
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remote = if where == "remote" then true else if where == "local" then false else abort "_module.args.nixinate.buildOn is not set to a valid value of 'local' or 'remote'";
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switch = if dry then "dry-activate" else "switch";
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script = (if remote then ''
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echo "🚀 Sending flake to ${machine} via rsync:"
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( set -x; ${final.rsync}/bin/rsync -q -vz --recursive --zc=zstd ${flake}/* ${user}@${host}:/tmp/nixcfg/ )
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echo "🤞 Activating configuration on ${machine} via ssh:"
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( set -x; ${final.openssh}/bin/ssh -t ${user}@${host} 'sudo nixos-rebuild ${switch} --flake /tmp/nixcfg#${machine}' )
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'' else ''
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echo "🔨 Building system closure locally and copying it to remote store:"
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( set -x; ${final.nixFlakes}/bin/nix copy --to ssh://${user}@${host} ${closure} )
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echo "🤞 Activating configuration on ${machine} via ssh:"
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SYSTEM_CLOSURE_PATH=$(${final.nixFlakes}/bin/nix path-info ${closure})
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( set -x; ${final.openssh}/bin/ssh -t ${user}@${host} "sudo $SYSTEM_CLOSURE_PATH/bin/switch-to-configuration ${switch}" )
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'') + ''
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echo "🚀 Deploying nixosConfigurations.${machine} from ${flake}"
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echo "👤 SSH User: ${user}"
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echo "🌐 SSH Host: ${host}"
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'';
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in final.writeScript "deploy-${machine}.sh" ''
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set -e
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SYSTEM_CLOSURE=${flake}#nixosConfigurations.${machine}.config.system.build.toplevel
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${script}
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'';
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in
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{
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nixinate =
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(
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nixpkgs.lib.genAttrs
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validMachines
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(x:
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{
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type = "app";
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program = toString (mkDeployScript false x);
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}
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)
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// nixpkgs.lib.genAttrs
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(map (a: a ++ "-dry-run") validMachines)
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(x:
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{
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type = "app";
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program = toString (mkDeployScript true x);
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}
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)
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);
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};
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};
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nixinate = forAllSystems (system: nixpkgsFor.${system}.generateApps);
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apps = nixinate.x86_64-linux examples;
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};
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}
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