remove wheel preference, add CI

utils/attic-push.bash

@@ -0,0 +1,26 @@
+#!/usr/bin/env nix
+#! nix shell nixpkgs#bash nixpkgs#jq nixpkgs#gnused nixpkgs#nixVersions.latest nixpkgs#attic-client --command bash
+
+#set -x
+#set -v
+set -e
+
+# retrieve all paths under 2G
+# nix_paths=$(nix path-info --json --all --closure-size \
+#   | jq 'map_values(.closureSize | select(. < 2e9)) | to_entries | sort_by(.value)' \
+#   | jq 'map(.key) | join("\n")' | sed -E -e 's/\\n/\n/g;s/^"//g;s/"$//g')
+
+# retrieve all paths
+nix_paths=$(nix path-info --json --all --closure-size |
+  jq 'map_values(.closureSize | select(true)) | to_entries | sort_by(.value)' |
+  jq 'map(.key) | join("\n")' | sed -E -e 's/\\n/\n/g;s/^"//g;s/"$//g')
+
+readarray -t nix_path_array < <(echo "$nix_paths")
+
+batchsize=1000
+
+for ((i = 0; i < ${#nix_path_array[@]}; i += batchsize)); do
+  part=("${nix_path_array[@]:i:batchsize}")
+
+  attic push nix-cache "${part[@]}"
+done