PureScript Installer

A command-line tool that installs the PureScript compiler to the current working directory. It first checks a disk cache, then downloads a prebuilt binary from the PureScript release page, and as a last resort compiles from source using Stack. Version 0.3.5 is the current stable release, with sparse updates since 2019. It is designed to be used behind the scenes by the `purescript` npm package, not directly by most users. Key differentiator: handles multiple installation strategies (cache, binary download, source compilation) automatically.