alice.pds.demo.boltless.dev
This repository has no description
nix: break out knot module into separate file
Signed-off-by: oppiliappan <me@oppi.li>
author
oppiliappan
committer
Tangled
date
(Jun 6, 2025, 9:20 AM UTC)
commit
e4aa9a80
e4aa9a80f0a134cd432a51e85fe5ad8f7bdc2ecd
parent
c17b766c
c17b766cc0fe332c2765a638d760f3e5f481626b
+173
-170
+1
-170
flake.nix
+1
-170
flake.nix
···
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};
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});
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-
nixosModules.knot = {
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config,
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pkgs,
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lib,
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...
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}: let
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cfg = config.services.tangled-knot;
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in
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with lib; {
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options = {
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services.tangled-knot = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Enable a tangled knot";
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};
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-
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appviewEndpoint = mkOption {
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type = types.str;
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default = "https://tangled.sh";
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description = "Appview endpoint";
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};
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-
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gitUser = mkOption {
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type = types.str;
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default = "git";
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description = "User that hosts git repos and performs git operations";
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};
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-
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openFirewall = mkOption {
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type = types.bool;
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default = true;
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description = "Open port 22 in the firewall for ssh";
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};
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-
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stateDir = mkOption {
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type = types.path;
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default = "/home/${cfg.gitUser}";
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description = "Tangled knot data directory";
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};
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-
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repo = {
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scanPath = mkOption {
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type = types.path;
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default = cfg.stateDir;
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description = "Path where repositories are scanned from";
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};
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-
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mainBranch = mkOption {
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type = types.str;
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default = "main";
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description = "Default branch name for repositories";
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};
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};
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-
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server = {
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listenAddr = mkOption {
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type = types.str;
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default = "0.0.0.0:5555";
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description = "Address to listen on";
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};
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-
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internalListenAddr = mkOption {
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type = types.str;
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default = "127.0.0.1:5444";
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description = "Internal address for inter-service communication";
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};
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-
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secretFile = mkOption {
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type = lib.types.path;
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example = "KNOT_SERVER_SECRET=<hash>";
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description = "File containing secret key provided by appview (required)";
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};
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-
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dbPath = mkOption {
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type = types.path;
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default = "${cfg.stateDir}/knotserver.db";
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description = "Path to the database file";
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};
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-
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hostname = mkOption {
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type = types.str;
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example = "knot.tangled.sh";
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description = "Hostname for the server (required)";
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};
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-
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dev = mkOption {
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type = types.bool;
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default = false;
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description = "Enable development mode (disables signature verification)";
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};
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};
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};
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};
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config = mkIf cfg.enable {
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environment.systemPackages = with pkgs; [git];
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system.activationScripts.gitConfig = ''
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mkdir -p "${cfg.repo.scanPath}"
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chown -R ${cfg.gitUser}:${cfg.gitUser} \
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"${cfg.repo.scanPath}"
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mkdir -p "${cfg.stateDir}/.config/git"
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cat > "${cfg.stateDir}/.config/git/config" << EOF
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[user]
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name = Git User
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email = git@example.com
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EOF
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chown -R ${cfg.gitUser}:${cfg.gitUser} \
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"${cfg.stateDir}"
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'';
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users.users.${cfg.gitUser} = {
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isSystemUser = true;
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useDefaultShell = true;
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home = cfg.stateDir;
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createHome = true;
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group = cfg.gitUser;
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};
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users.groups.${cfg.gitUser} = {};
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-
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services.openssh = {
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enable = true;
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extraConfig = ''
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Match User ${cfg.gitUser}
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AuthorizedKeysCommand /etc/ssh/keyfetch_wrapper
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AuthorizedKeysCommandUser nobody
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'';
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};
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environment.etc."ssh/keyfetch_wrapper" = {
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mode = "0555";
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text = ''
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#!${pkgs.stdenv.shell}
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${self.packages.${pkgs.system}.knot}/bin/knot keys \
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-output authorized-keys \
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-internal-api "http://${cfg.server.internalListenAddr}" \
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-git-dir "${cfg.repo.scanPath}" \
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-log-path /tmp/knotguard.log
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'';
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};
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systemd.services.knot = {
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description = "knot service";
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after = ["network.target" "sshd.service"];
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wantedBy = ["multi-user.target"];
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serviceConfig = {
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User = cfg.gitUser;
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WorkingDirectory = cfg.stateDir;
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Environment = [
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"KNOT_REPO_SCAN_PATH=${cfg.repo.scanPath}"
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"KNOT_REPO_MAIN_BRANCH=${cfg.repo.mainBranch}"
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"APPVIEW_ENDPOINT=${cfg.appviewEndpoint}"
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"KNOT_SERVER_INTERNAL_LISTEN_ADDR=${cfg.server.internalListenAddr}"
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"KNOT_SERVER_LISTEN_ADDR=${cfg.server.listenAddr}"
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"KNOT_SERVER_DB_PATH=${cfg.server.dbPath}"
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"KNOT_SERVER_HOSTNAME=${cfg.server.hostname}"
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];
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EnvironmentFile = cfg.server.secretFile;
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ExecStart = "${self.packages.${pkgs.system}.knot}/bin/knot server";
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Restart = "always";
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};
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};
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networking.firewall.allowedTCPPorts = mkIf cfg.openFirewall [22];
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};
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};
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-
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nixosConfigurations.knotVM = nixpkgs.lib.nixosSystem {
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system = "x86_64-linux";
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modules = [
···
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];
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};
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nixosModules.appview = import ./nix/modules/appview.nix {inherit self;};
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nixosModules.knot = import ./nix/modules/knot.nix {inherit self;};
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};
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}
+172
nix/modules/knot.nix
+172
nix/modules/knot.nix
···
1
+
{self}: {
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config,
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+
pkgs,
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+
lib,
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+
...
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+
}: let
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cfg = config.services.tangled-knot;
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in
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with lib; {
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options = {
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services.tangled-knot = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Enable a tangled knot";
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};
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+
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appviewEndpoint = mkOption {
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type = types.str;
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default = "https://tangled.sh";
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description = "Appview endpoint";
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};
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+
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gitUser = mkOption {
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type = types.str;
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default = "git";
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description = "User that hosts git repos and performs git operations";
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};
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+
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openFirewall = mkOption {
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type = types.bool;
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default = true;
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description = "Open port 22 in the firewall for ssh";
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};
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+
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stateDir = mkOption {
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type = types.path;
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default = "/home/${cfg.gitUser}";
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description = "Tangled knot data directory";
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};
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+
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repo = {
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scanPath = mkOption {
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type = types.path;
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default = cfg.stateDir;
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description = "Path where repositories are scanned from";
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};
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+
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mainBranch = mkOption {
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type = types.str;
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default = "main";
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description = "Default branch name for repositories";
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};
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};
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+
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server = {
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listenAddr = mkOption {
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type = types.str;
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default = "0.0.0.0:5555";
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description = "Address to listen on";
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};
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+
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internalListenAddr = mkOption {
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type = types.str;
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default = "127.0.0.1:5444";
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description = "Internal address for inter-service communication";
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};
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+
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secretFile = mkOption {
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type = lib.types.path;
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example = "KNOT_SERVER_SECRET=<hash>";
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description = "File containing secret key provided by appview (required)";
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};
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+
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dbPath = mkOption {
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type = types.path;
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default = "${cfg.stateDir}/knotserver.db";
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description = "Path to the database file";
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};
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+
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hostname = mkOption {
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type = types.str;
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example = "knot.tangled.sh";
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description = "Hostname for the server (required)";
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};
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+
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dev = mkOption {
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type = types.bool;
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default = false;
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description = "Enable development mode (disables signature verification)";
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};
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};
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};
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};
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+
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config = mkIf cfg.enable {
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environment.systemPackages = with pkgs; [
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git
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self.packages."${pkgs.system}".knot
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];
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+
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system.activationScripts.gitConfig = ''
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mkdir -p "${cfg.repo.scanPath}"
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chown -R ${cfg.gitUser}:${cfg.gitUser} \
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"${cfg.repo.scanPath}"
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+
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mkdir -p "${cfg.stateDir}/.config/git"
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cat > "${cfg.stateDir}/.config/git/config" << EOF
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[user]
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name = Git User
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email = git@example.com
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EOF
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chown -R ${cfg.gitUser}:${cfg.gitUser} \
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"${cfg.stateDir}"
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'';
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+
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users.users.${cfg.gitUser} = {
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isSystemUser = true;
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useDefaultShell = true;
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home = cfg.stateDir;
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createHome = true;
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group = cfg.gitUser;
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};
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+
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users.groups.${cfg.gitUser} = {};
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+
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services.openssh = {
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enable = true;
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extraConfig = ''
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Match User ${cfg.gitUser}
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AuthorizedKeysCommand /etc/ssh/keyfetch_wrapper
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AuthorizedKeysCommandUser nobody
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'';
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};
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+
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environment.etc."ssh/keyfetch_wrapper" = {
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mode = "0555";
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text = ''
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#!${pkgs.stdenv.shell}
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${self.packages.${pkgs.system}.knot}/bin/knot keys \
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-output authorized-keys \
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-internal-api "http://${cfg.server.internalListenAddr}" \
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+
-git-dir "${cfg.repo.scanPath}" \
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-log-path /tmp/knotguard.log
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'';
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+
};
147
+
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+
systemd.services.knot = {
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+
description = "knot service";
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+
after = ["network.target" "sshd.service"];
151
+
wantedBy = ["multi-user.target"];
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+
serviceConfig = {
153
+
User = cfg.gitUser;
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+
WorkingDirectory = cfg.stateDir;
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+
Environment = [
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"KNOT_REPO_SCAN_PATH=${cfg.repo.scanPath}"
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+
"KNOT_REPO_MAIN_BRANCH=${cfg.repo.mainBranch}"
158
+
"APPVIEW_ENDPOINT=${cfg.appviewEndpoint}"
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+
"KNOT_SERVER_INTERNAL_LISTEN_ADDR=${cfg.server.internalListenAddr}"
160
+
"KNOT_SERVER_LISTEN_ADDR=${cfg.server.listenAddr}"
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+
"KNOT_SERVER_DB_PATH=${cfg.server.dbPath}"
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+
"KNOT_SERVER_HOSTNAME=${cfg.server.hostname}"
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];
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EnvironmentFile = cfg.server.secretFile;
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ExecStart = "${self.packages.${pkgs.system}.knot}/bin/knot server";
166
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Restart = "always";
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};
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+
};
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+
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+
networking.firewall.allowedTCPPorts = mkIf cfg.openFirewall [22];
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+
};
172
+
}