See https://haskellstack.org/ for installation and upgrade instructions. **Changes since v2.7.1:** Other enhancements: * `stack upgrade` will download from `haskellstack.org` before trying `github.com`. See [#5288](https://github.com/commercialhaskell/stack/issues/5288) * `stack upgrade` makes less assumptions about archive format. See [#5288](https://github.com/commercialhaskell/stack/issues/5288) * Add a `--no-run` flag to the `script` command when compiling. Bug fixes: * GHC source builds work properly for recent GHC versions again. See [#5528](https://github.com/commercialhaskell/stack/issues/5528) * `stack setup` always looks for the unpacked directory name to support different tar file naming conventions. See [#5545](https://github.com/commercialhaskell/stack/issues/5545) * Bump `pantry` version for better OS support. See [pantry#33](https://github.com/commercialhaskell/pantry/issues/33) * When building the sanity check for a new GHC install, make sure to clear `GHC_PACKAGE_PATH`. * Specifying GHC RTS flags in the `stack.yaml` no longer fails with an error. [#5568](https://github.com/commercialhaskell/stack/pull/5568) * `stack setup` will look in sandboxed directories for executables, not relying on `findExecutables. See [GHC issue 20074](https://gitlab.haskell.org/ghc/ghc/-/issues/20074) * Track changes to `setup-config` properly to avoid reconfiguring on every change. See [#5578](https://github.com/commercialhaskell/stack/issues/5578) **Thanks to all our contributors for this release:** * Andreas Källberg * Artur Gajowy * Felix Yan * fwcd * Ketzacoatl * Matt Audesse * Michael Snoyman * milesfrain * parsonsmatt * skforg