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70 lines
1.8 KiB
Nix
70 lines
1.8 KiB
Nix
{ config, lib, ... }:
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with lib;
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let cfg = config.nix.sshServe;
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command =
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if cfg.protocol == "ssh"
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then "nix-store --serve ${lib.optionalString cfg.write "--write"}"
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else "nix-daemon --stdio";
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in {
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options = {
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nix.sshServe = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable serving the Nix store as a remote store via SSH.";
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};
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write = mkOption {
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type = types.bool;
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default = false;
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description = "Whether to enable writing to the Nix store as a remote store via SSH. Note: the sshServe user is named nix-ssh and is not a trusted-user. nix-ssh should be added to the nix.trustedUsers option in most use cases, such as allowing remote building of derivations.";
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};
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keys = mkOption {
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type = types.listOf types.str;
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default = [];
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example = [ "ssh-dss AAAAB3NzaC1k... alice@example.org" ];
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description = "A list of SSH public keys allowed to access the binary cache via SSH.";
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};
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protocol = mkOption {
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type = types.enum [ "ssh" "ssh-ng" ];
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default = "ssh";
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description = "The specific Nix-over-SSH protocol to use.";
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};
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};
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};
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config = mkIf cfg.enable {
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users.users.nix-ssh = {
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description = "Nix SSH store user";
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isSystemUser = true;
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group = "nix-ssh";
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useDefaultShell = true;
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};
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users.groups.nix-ssh = {};
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services.openssh.enable = true;
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services.openssh.extraConfig = ''
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Match User nix-ssh
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AllowAgentForwarding no
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AllowTcpForwarding no
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PermitTTY no
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PermitTunnel no
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X11Forwarding no
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ForceCommand ${config.nix.package.out}/bin/${command}
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Match All
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'';
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users.users.nix-ssh.openssh.authorizedKeys.keys = cfg.keys;
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};
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}
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