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-rw-r--r--modules/programs/ssh/default.nix13
1 files changed, 7 insertions, 6 deletions
diff --git a/modules/programs/ssh/default.nix b/modules/programs/ssh/default.nix
index 87978e6..5fc7415 100644
--- a/modules/programs/ssh/default.nix
+++ b/modules/programs/ssh/default.nix
@@ -151,12 +151,13 @@ in
services.openssh.authorizedKeysFiles = [ "%h/.ssh/authorized_keys" "/etc/ssh/authorized_keys.d/%u" ];
environment.etc = authKeysFiles //
- { "ssh/ssh_known_hosts".text = (flip (concatMapStringsSep "\n") knownHosts
- (h: assert h.hostNames != [];
- concatStringsSep "," h.hostNames + " "
- + (if h.publicKey != null then h.publicKey else readFile h.publicKeyFile)
- )) + "\n";
-
+ { "ssh/ssh_known_hosts" = mkIf (builtins.length knownHosts > 0) {
+ text = (flip (concatMapStringsSep "\n") knownHosts
+ (h: assert h.hostNames != [];
+ concatStringsSep "," h.hostNames + " "
+ + (if h.publicKey != null then h.publicKey else readFile h.publicKeyFile)
+ )) + "\n";
+ };
"ssh/sshd_config.d/101-authorized-keys.conf" = {
text = "AuthorizedKeysFile ${toString config.services.openssh.authorizedKeysFiles}\n";
# Allows us to automatically migrate from using a file to a symlink