Add SSH

Configure ssh, use git-crypt to crypt the configuration.
That way no information like domain name, ip, port, username, etc. are
exposed.

.gitattributes

@@ -0,0 +1 @@
+home/programs/ssh-match-blocks.nix filter=git-crypt diff=git-crypt

home/packages.nix

@@ -22,6 +22,7 @@ with pkgs; [
   bc
 
   borgbackup
+  git-crypt
   keepassxc
 
   libreoffice

home/programs.nix

@@ -39,6 +39,9 @@
     inherit config pkgs;
   };
 
+  ssh = import ./programs/ssh.nix {
+  };
+
   zathura = import ./programs/zathura.nix {
   };
 

home/programs/ssh.nix

@@ -0,0 +1,7 @@
+_:
+
+{
+  enable = true;
+  matchBlocks = import ./ssh-match-blocks.nix {
+  };
+}

readme.md

@@ -110,8 +110,6 @@ Migration:
 * Thunderbird configuration to nix. Seems like no module exists, but is same as
   for firefox.
 
-* Migrate ssh config (I don't really like to expose customer server names and configs to outer world, how to handle?)
-
 * Migrate PGP?
 
    * Right now I've installed gnupg2, gnupg, gpg on ubuntu