script to find live links to large nix closures

1 files changed, 11 insertions, 0 deletions

diff --git a/nix-audit-sizes b/nix-audit-sizes
new file mode 100755
index 0000000..b36278c
--- /dev/null
+++ b/nix-audit-sizes
@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+#
+echo "# this takes a while, be patient..."
+roots=$(find -H /nix/var/nix/gcroots/auto -type l)
+for root in $roots
+do
+  link=$(readlink $root)
+  storepath=$(realpath $link)
+  size=$(nix-store -q --requisites $storepath | sort -uf | xargs du -ch | tail -1 | sed 's/[ ]*total//g')
+  printf "%s\n\t%s\n\t%s\n\n" $size $link $storepath
+done