Cleaning the nix store: Difference between revisions

Latest revision as of 21:14, 24 April 2024

Sometimes your store fills up the disk, but a simple

nix-store --gc

does not seem to clean all that much.

This usually means that you have some old collection roots that keep old versions of nixpkgs around.

Sometimes result files created by an ad-hoc nix-build bind a lot of resources, these can be found by running:

  nix-store --gc --print-roots | egrep -v "^(/nix/var|/run/\w+-system|\{memory|/proc)"

Additional Resources about cleaning up the nix-store:

There are multiple tools that can help with discovering gcroots and calculate the disk size:

@@ Line 1: / Line 1: @@
-Sometimes your store fills up the disk, but a simple <syntaxHighlight>nix-store --gc</syntaxHighlight> does not seem to clean all that much.
+Sometimes your store fills up the disk, but a simple
+<syntaxhighlight lang=text>nix-store --gc</syntaxhighlight>
+does not seem to clean all that much.
-This usually means that you have some garbage collection roots that keep old versions of nixpkgs around.
+This usually means that you have some old collection roots that keep old versions of nixpkgs around.
-There is multiple tools that can help with discovering these gc roots:
+Sometimes <code>result</code> files created by an ad-hoc <code>nix-build</code> bind a lot of resources, these can be found by running:
+<syntaxhighlight lang=shell>
+  nix-store --gc --print-roots | egrep -v "^(/nix/var|/run/\w+-system|\{memory|/proc)"
+</syntaxhighlight>
+Additional Resources about cleaning up the ''nix-store'':
+* https://matthewrhone.dev/nixos-package-guide#cleanup-old-packages-user-wide
+* [[Storage optimization]]
+* https://old.reddit.com/r/NixOS/comments/8m1n3d/taking_out_the_trash/
+There are multiple tools that can help with discovering ''gcroots'' and calculate the disk size:
 * https://github.com/symphorien/nix-du
@@ Line 9: / Line 23: @@
 * https://github.com/cdepillabout/nix-query-tree-viewer
 * https://github.com/craigmbooth/nix-visualize
+[[Category:nix]]