diff --git a/nixos/common.nix b/nixos/common.nix
index e5b7312e..caddc0c9 100644
--- a/nixos/common.nix
+++ b/nixos/common.nix
@@ -66,16 +66,13 @@
   };
 
   fonts.fonts = with pkgs; [
-    (fetchzip {
-      name = "berkeley-mono-fonts";
-      url = "file:///" + ./fonts.zip;
-      postFetch = ''
-        mkdir -p $out/share/fonts
-        unzip -j $downloadedFile \*.otf -d $out/share/fonts/opentype
-        unzip -j $downloadedFile \*.ttf -d $out/share/fonts/truetype
-      '';
-      sha256 = "sha256-r4R7+GrdbksV+EtV68RlzTauTgBS3tzlqawgTMXyJW8=";
-    })
+    (runCommand "berkeley-fonts" { } ''
+      mkdir -vp "$out/share/fonts/opentype"
+      mkdir -vp "$out/share/fonts/truetype"
+      ${pkgs.unzip}/bin/unzip ${./fonts.zip} \*.otf -d $out/share/fonts/opentype
+      ${pkgs.unzip}/bin/unzip ${./fonts.zip} \*.ttf -d $out/share/fonts/truetype
+
+    '')
 
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