ssh: fix github known hosts

Using a pkgs.writeText causes an import at evaluation time instead of
just build time. This means that no host running `nix flake check` can
check all configurations if you have mixed architectures in a flake.

For some reason I've been getting away with this. This stopped when
switching to nixos-2311. Move the known hosts with a single key into the
NixOS config directly and put the GitHub keys in a real file. These
can't go into `.knownHosts` directly as it only supports one key per
host (sigh).

Reference: NixOS/nix#4265

modules/common/github_known_hosts

@@ -0,0 +1,3 @@
+github.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl"
+github.com ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEmKSENjQEezOmxkZMy7opKgwFB9nkt5YRrYMjNuG5N87uRgg6CLrbo5wAdT/y6v0mKV0U2w0WZ2YB/++Tpockg="
+github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ=="

modules/common/ssh.nix

@@ -1,7 +1,14 @@
 { pkgs, lib, config, ... }:
 
 {
-  users.users."jake".openssh.authorizedKeys.keyFiles = [ ./authorized_keys ];
+  users.users."jake".openssh.authorizedKeys.keys = [
+    "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBOt74U+rL+BMtAEjfu/Optg1D7Ly7U+TupRxd5u9kfN7oJnW4dJA25WRSr4dgQNq7MiMveoduBY/ky2s0c9gvIA= jake@jake-gentoo"
+    "ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBC0uKIvvvkzrOcS7AcamsQRFId+bqPwUC9IiUIsiH5oWX1ReiITOuEo+TL9YMII5RyyfJFeu2ZP9moNuZYlE7Bs= jake@jake-mbp"
+
+    "ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAyFsYYjLZ/wyw8XUbcmkk6OKt2IqLOnWpRE5gEvm3X0V4IeTOL9F4IL79h7FTsPvi2t9zGBL1hxeTMZHSGfrdWaMJkQp94gA1W30MKXvJ47nEVt0HUIOufGqgTTaAn4BHxlFUBUuS7UxaA4igFpFVoPJed7ZMhMqxg+RWUmBAkcgTWDMgzUx44TiNpzkYlG8cYuqcIzpV2dhGn79qsfUzBMpGJgkxjkGdDEHRk66JXgD/EtVasZvqp5/KLNnOpisKjR88UJKJ6/buV7FLVra4/0hA9JtH9e1ecCfxMPbOeluaxlieEuSXV2oJMbQoPP87+/QriNdi/6QuCHkMDEhyGw== jake@jake-mbp"
+    "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCw4lgH20nfuchDqvVf0YciqN0GnBw5hfh8KIun5z0P7wlNgVYnCyvPvdIlGf2Nt1z5EGfsMzMLhKDOZkcTMlhupd+j2Er/ZB764uVBGe1n3CoPeasmbIlnamZ12EusYDvQGm2hVJTGQPPp9nKaRxr6ljvTMTNl0KWlWvKP4kec74d28MGgULOPLT3HlAyvUymSULK4lSxFK0l97IVXLa8YwuL5TNFGHUmjoSsi/Q7/CKaqvNh+ib1BYHzHYsuEzaaApnCnfjDBNexHm/AfbI7s+g3XZDcZOORZn6r44dOBNFfwvppsWj3CszwJQYIFeJFuMRtzlC8+kyYxci0+FXHn jake@jake-gentoo"
+
+  ];
 
   programs.mosh.enable = true;
   services.openssh = {
@@ -14,12 +21,23 @@
     };
   };
 
-  programs.ssh.knownHostsFiles = [
-    ./known_hosts
-    (pkgs.writeText "github.keys" ''
-      github.com ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl
-      github.com ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBEmKSENjQEezOmxkZMy7opKgwFB9nkt5YRrYMjNuG5N87uRgg6CLrbo5wAdT/y6v0mKV0U2w0WZ2YB/++Tpockg=
-      github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==
-    '')
-  ];
+  programs.ssh.knownHosts = {
+    # Global Internet hosts
+    "ssh.gitea.hillion.co.uk".publicKey = "ssh-rsa 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";
+    "server.stranger.proxmox.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE9d5u/VaeRTQUQfu5JzCRa+zij/DtrPNWOfr+jM4iDp";
+
+    # Tailscale hosts
+    "dancefloor.dancefloor.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEXkGueVYKr2wp/VHo2QLis0kmKtc/Upg3pGoHr6RkzY";
+    "gendry.jakehillion.terminals.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPXM5aDvNv4MTITXAvJWSS2yvr/mbxJE31tgwJtcl38c";
+    "homeassistant.homeassistant.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPM2ytacl/zYXhgvosvhudsl0zW5eQRHXm9aMqG9adux";
+    "microserver.home.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPPOCPqXm5a+vGB6PsJFvjKNgjLhM5MxrwCy6iHGRjXw";
+    "microserver.parents.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIL0cjjNQPnJwpu4wcYmvfjB1jlIfZwMxT+3nBusoYQFr";
+    "pbs.proxmox.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGGY6ky2sQjg/bLRUWOUERmAOqboAjy+9PkE8sU+angx";
+    "router.home.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAlCj/i2xprN6h0Ik2tthOJQy6Qwq3Ony73+yfbHYTFu";
+    "router.stranger.proxmox.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHq9tITN59FJfGoyOPNgP1QyJ0ohbVQS8OZtRO960Uxk";
+    "stranger.proxmox.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE9d5u/VaeRTQUQfu5JzCRa+zij/DtrPNWOfr+jM4iDp";
+    "tywin.storage.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGATsjWO0qZNFp2BhfgDuWi+e/ScMkFxp79N2OZoed1k";
+    "vm.strangervm.ts.hillion.co.uk".publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINb9mgyD/G3Rt6lvO4c0hoaVOlLE8e3+DUfAoB1RI5cy";
+  };
+  programs.ssh.knownHostsFiles = [ ./github_known_hosts ];
 }