Build tools: Homebrew, Rust, Python, PHP, Go, Android

Each toolchain has a build folder per project and a download cache per machine. These guides give the command that sizes each one, the command that clears it, and the command that brings it back.

The commands brew cleanup --dry-run and brew cleanup --prune=all, above a Homebrew row marked Your call

Build tools

brew cleanup: free Homebrew disk space on a Mac

See what brew cleanup would remove with --dry-run, clear old versions and downloads with --prune=all, and find the formulae that really take the space.

11 Nov 2026, 5 min read

A Rust target folder marked Safe with cargo build, the command cargo clean --dry-run, and a stable toolchain of 445 MB

Build tools

Rust target folders and rustup toolchains: free space

Find every Cargo target folder on your Mac with its size, preview a cargo clean with --dry-run, and remove old rustup toolchains. All of it can be rebuilt.

11 Nov 2026, 5 min read

Three rows: .venv marked Safe with uv sync, the pip cache marked Safe, and conda packages marked Your call

Build tools

Clean pip, conda and virtualenvs on a Mac

Python disk space on a Mac: find every virtualenv with its size, purge the pip and uv caches, preview conda clean with --dry-run, and recreate what you need.

11 Nov 2026, 5 min read

Three rows: ~/.gradle/caches marked Safe, an unused Android system image of 2.5 GB marked Safe, and an emulator with apps and data inside

Build tools

Clean Gradle caches, Android SDK and emulator images

Android work fills ~/.gradle, the SDK folder and ~/.android/avd. See what each one holds, which system images and emulators can go, and what downloads again.

11 Nov 2026, 5 min read

A Laravel project: vendor and storage/framework/views marked Safe, storage/app marked Protected

Build tools

Delete Composer vendor folders and clear its cache

Find every Composer vendor folder on your Mac with its size, clear the cache with composer clear-cache, and restore any project with composer install.

11 Nov 2026, 4 min read

The command go clean -modcache above the Go build cache and the Go module cache, both marked Safe

Build tools

go clean -modcache and -cache: free Go disk space

Go keeps a build cache and a module cache in your home folder. See both sizes with go env, preview a clean with -n, and learn why rm fails on the module cache.

11 Nov 2026, 5 min read

The command flutter clean beside three rows: build and .dart_tool marked Safe, the pub cache marked Your call

Build tools

flutter clean and the pub cache: free Flutter space

What flutter clean deletes, where the pub cache lives, and how to free the space a Flutter project takes across build, .dart_tool, Pods and Gradle folders.

11 Nov 2026, 5 min read

A Unity project: Library marked Your call, Temp marked Safe, Assets marked Protected

Build tools

Is it safe to delete the Unity Library folder?

Yes, with Unity closed: Library is an import cache that Unity rebuilds when you open the project. What it costs, what else can go, and what must stay.

11 Nov 2026, 5 min read

New guides arrive in the Atom feed of the Wipzy blog. To see the app these guides lead to, watch Wipzy clean a Mac in 47 seconds, read how the four risk levels work, or see what is free and what Pro adds.