Release 2.8.0.0
Notable changes:
* Use ByteString for GroupEntry/UserEntry
* Fix `semTrywait` on darwin
* Fix vanishing environment variables in `System.Posix.Env.ByteString.putEnv`/`System.Posix.Env.ByteString.getEnv`
* Add missing `setEnvironment` and `clearEnv` to `System.Posix.Env.ByteString`
* Add support for filepath-1.4.100.0 with `PosixString` variants
* Expose `DirStream`, `CDir`, `CDirent` and `DirStreamOffset` (internal API)
* Add `fdRead`/`fdWrite` with ByteString payload and deprecate String based `fdRead`
* Add `clocksPerSec`
* Support wasm32-wasi
* Implement BaudRate as an `Int` newtype and allow matching via extensible PatternSynonyms
* Added `readDirStreamMaybe`
* Warn when functions are used on unsupported platforms
* Fix the error handling of `posix_fallocate`
* Export `FileStatus` constructor
* Various documentation and error message improvements
* Add openDirStreamFd, openFileAt and createFileAt
* Add accessors for st_blocks and st_blksize
* Deal with FreeBSD getpwnam_r(3), ... thread safety. On FreeBSD these
are not in fact safe for overlapped execution with a sequence of
getpwent(3) or getgrent(3) calls when multiple "green" threads share
the same underlying OS thread. The *ent(3) calls now run in bound
threads or else locks are used to avoid overlapped execution.
* Make passwd/group FFI functions "safe", these are not low-latency APIs.
* Drop support for non-thread-safe getpwnam(3) and getpwuid(3). All
supported platforms have getpwnam_r(3) and getpwuid_r(3). This was
already the case for the getgr(nam|gid) calls.
* Added terminal output flags to `System.Posix.Terminal.Common.TerminalMode`
IXANY, ONLCR, OCRNL, ONOCR, ONLRET, OFDEL, OFILL, NLDLY(NL0,NL1),
CRDLY(CR0,CR1,CR2,CR2), TABDLY(TAB0,TAB1,TAB2,TAB3) BSDLY(BS0,BS1),
VTDLY(VT0,VT1), FFDLY(FF0,FF1)
* Add support for `O_NOFOLLOW`, `O_CLOEXEC`, `O_DIRECTORY` and `O_SYNC`
(#6, #57)
* Refactor API of `openFd` removing `Maybe FileMode` argument,
which now must be passed as part of `OpenFileFlags`
(e.g. `defaultFileFlags { creat = Just mode }`) (#58)
* Remove deprecated `execvpe(3)` legacy-emulation CPP macro
* Generalise return type of `exitImmediately` from `ExitCode -> IO ()` to
`∀a. ExitCode -> IO a` (#130)
* Add `Read`, `Show`, `Eq`, and `Ord` typeclass instances to `OpenFileFlags` and `OpenMode`. (#75, #141)