nix: expose shared home manager configuration via homeModules

nix/homeModules/fish/functions/largest-objects-in-repo.fish

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+# Shows you the largest objects in your repo's pack file. Written for osx.
+# @see http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
+# @author Antony Stubbs
+# translated to fish with ChatGPT, reviewed by Léana :P
+
+# set the internal field spereator to line break, so that we can iterate easily over the verify-pack output
+set -x IFS "\n"
+
+# list all objects including their size, sort by size, take top 10
+set objects (git verify-pack -v .git/objects/pack/pack-*.idx | grep -v chain | sort -k3nr | head)
+
+echo "All sizes are in kB. The pack column is the size of the object, compressed, inside the pack file."
+
+set output "size,pack,SHA,location"
+for obj in $objects
+    # extract the size in bytes
+    set size (math (echo $obj | cut -f 5 -d ' ') / 1024)
+    # extract the compressed size in bytes
+    set compressedSize (math (echo $obj | cut -f 6 -d ' ') / 1024)
+    # extract the SHA
+    set sha (echo $obj | cut -f 1 -d ' ')
+    # find the objects location in the repository tree
+    set other (git rev-list --all --objects | grep $sha)
+    #lineBreak=`echo -e "\n"`
+    set output "$output\n$size,$compressedSize,$other"
+end
+
+echo -e $output | column -t -s ', '