stack-clean-old
A small tool to clean away older Haskell stack
snapshot builds and ghc versions to recover diskspace.
Usage
stack-clean-old [size|list|remove|keep-minor|purge-older|delete-work] [(-p|--project) | (-g|--ghc)] [GHCVER]
Options:
--project (default in a stack project dir): act on .stack-work/install/
--global (default outside a project dir): act on ~/.stack/snapshots/ and ~/.stack/programs/
and the subcommands:
size:
prints the total size of the above directories
(size does not take a GHCVER argument).
list:
shows the total size and number of snapshots per ghc version
(the GHCVER argument is optional).
remove:
removes for the specified ghc version (the GHCVER argument is required).
keep-minor:
removes the builds/installs for previous minor ghc versions.
If GHCVER is given then only minor versions older than it are removed.
purge-older and delete-work:
see sections below
If you remove any needed snapshot builds for a version of ghc,
then you would have to rebuild them again for any projects still using them,
so removal should be used cautiously, but it can recover a lot of diskspace.
NBB: All the command support --dry-run (-n), so please use it to
check the effect of running them safely beforehand.
Example usage
To remove project builds for ghc-8.2.2:
$ stack-clean-old list
154M 8.2.2 (5 dirs)
154M 8.4.4 (5 dirs)
163M 8.6.5 (5 dirs)
$ stack-clean-old remove -p 8.2.2
Remove stack ghc-8.4 snapshot builds and compilers before 8.4.4:
$ stack-clean-old list -g 8.4
421M 8.4.1 (7 dirs)
368M 8.4.2 (6 dirs)
489M 8.4.3 (8 dirs)
799M 8.4.4 (24 dirs)
$ stack-clean-old keep-minor -g 8.4.4
ghc-tinfo6-8.4.3 removed
7 dirs removed for 8.4.1
6 dirs removed for 8.4.2
8 dirs removed for 8.4.3
Incidently I build my projects across as many major Stackage LTS versions as possible (using my stack-all tool), and collectively this piles up to a lot of diskspace: so I wrote this tool to help manage that.
Purging older stack project builds
stack-clean-old purge-older
This command removes older stack builds from .stack-work/install/.
By default it keeps 5 newest builds per ghc version.
The preservation/deletion is calculated and done per ghc version.
NB: If you regularly build your project for several branches/tags against the same LTS or ghc version then it is safer to avoid using purge-older.
Deleting all .stack-work/ subdirectories
stack-clean-old delete-work can be used to recursively remove
all .stack-work/ dirs from a project to save space
(seems same as stack clean --full).
stack-clean-old delete-work --all works from outside stack projects:
please test with --dry-run first.
Installation
Run stack install or cabal install
This tool complements stack-all
which builds projects over LTS major versions and hence generates lot of stack builds.
Contributing
BSD license
Project: https://github.com/juhp/stack-clean-old
Warning disclaimer
Use at your own risk: the author takes no responsibility for any loss or damaged caused by using this tool, as also mentioned in LICENSE.
Bug reports, suggestions, and improvements are welcome.
