fix(emacs): Fix ivy & prescient integration by manually pinning ivy

In the previous configuration the dependency on `ivy-pass` added a
second version of ivy to the load-path.

It is fixed by manually pinning ivy and its related packages and using
those to build ivy-pass.

This configuration should be temporary until the next time the MELPA
package set is updated in nixpkgs.

This caused the symptoms in raxod502/prescient.el#10

1 files changed, 0 insertions, 1 deletions

diff --git a/packages.nix b/packages.nix
index 2e0b01b9bcba..1ab5eef95709 100644
--- a/packages.nix
+++ b/packages.nix
@@ -42,7 +42,6 @@ in {
 
       kontemplate = unstable.kontemplate;
       mq-cli = unstable.mq-cli;
-      emacs = unstable.emacs; # emacs 26.1
       vlc = unstable.vlc; # VLC 3.0!
     };
   };