Drop GHC < 8.2

.github/workflows/ci.yml

@@ -11,49 +11,16 @@ defaults:
     shell: bash
 
 jobs:
-  build-old:
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: true
-      matrix:
-        os: [ubuntu-latest]
-        ghc: ['7.8.4', '7.6.3', '7.4.2']
-    steps:
-    - uses: actions/checkout@v2
-    - uses: actions/cache@v2.1.4
-      name: Cache cabal stuff
-      with:
-        path: |
-          ${{ steps.setup-haskell-cabal.outputs.cabal-store }}
-          dist-newstyle
-        key: ${{ runner.os }}-${{ matrix.ghc }}
-    - name: Install GHC
-      run: |
-        sudo add-apt-repository ppa:hvr/ghc -y
-        sudo apt-get update
-        sudo apt-get install ghc-${{ matrix.ghc }}
-    - name: Build
-      run: |
-        autoreconf -i
-        cabal sdist -z -o .
-        cabal get unix-*.tar.gz
-        cd unix-*/
-        cabal update
-        cabal test -w /opt/ghc/bin/ghc-${{ matrix.ghc }} all
-    - name: Haddock
-      run: cabal haddock -w /opt/ghc/bin/ghc-${{ matrix.ghc }}
-
   build:
-    needs: build-old
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: true
       matrix:
         os: [ubuntu-latest, macOS-latest]
-        ghc: ['8.10', '8.8', '8.6', '8.4', '8.2', '8.0', '7.10']
+        ghc: ['9.0', '8.10', '8.8', '8.6', '8.4', '8.2']
     steps:
     - uses: actions/checkout@v2
-    - uses: actions/setup-haskell@v1
+    - uses: haskell/actions/setup@v1
       id: setup-haskell-cabal
       with:
         ghc-version: ${{ matrix.ghc }}

System/Posix/ByteString/FilePath.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/Directory.hsc

@@ -1,10 +1,6 @@
 {-# LANGUAGE CApiFFI #-}
 {-# LANGUAGE NondecreasingIndentation #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/Directory/ByteString.hsc

@@ -1,10 +1,6 @@
 {-# LANGUAGE CApiFFI #-}
 {-# LANGUAGE NondecreasingIndentation #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/Directory/Common.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/DynamicLinker.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.DynamicLinker

System/Posix/DynamicLinker/ByteString.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/DynamicLinker/Common.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.DynamicLinker.Common

System/Posix/DynamicLinker/Module.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.DynamicLinker.Module

System/Posix/DynamicLinker/Module/ByteString.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/DynamicLinker/Prim.hsc

@@ -1,7 +1,4 @@
 {-# LANGUAGE Trustworthy #-}
-#if __GLASGOW_HASKELL__ >= 709
-{-# OPTIONS_GHC -fno-warn-trustworthy-safe #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/Env.hsc

@@ -1,9 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Env
@@ -42,12 +38,6 @@ import Control.Monad
 import Data.Maybe (fromMaybe)
 import System.Posix.Internals
 
-#if !MIN_VERSION_base(4,7,0)
--- needed for backported local 'newFilePath' binding in 'putEnv'
-import GHC.IO.Encoding (getFileSystemEncoding)
-import qualified GHC.Foreign as GHC (newCString)
-#endif
-
 -- |'getEnv' looks up a variable in the environment.
 
 getEnv ::
@@ -150,11 +140,6 @@ putEnv keyvalue = do s <- newFilePath keyvalue
                      -- According to SUSv2, the string passed to putenv
                      -- becomes part of the environment. #7342
                      throwErrnoIfMinus1_ "putenv" (c_putenv s)
-#if !MIN_VERSION_base(4,7,0)
-    where
-      newFilePath :: FilePath -> IO CString
-      newFilePath fp = getFileSystemEncoding >>= \enc -> GHC.newCString enc fp
-#endif
 
 foreign import ccall unsafe "putenv"
    c_putenv :: CString -> IO CInt

System/Posix/Env/ByteString.hsc

@@ -1,8 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
-{-# LANGUAGE Trustworthy #-}
-#if __GLASGOW_HASKELL__ >= 709
-{-# OPTIONS_GHC -fno-warn-trustworthy-safe #-}
-#endif
+{-# LANGUAGE Safe #-}
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/Error.hs

@@ -1,9 +1,4 @@
-{-# LANGUAGE CPP #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Error

System/Posix/Fcntl.hsc

@@ -1,9 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Fcntl

System/Posix/Files.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 {-# LANGUAGE CApiFFI #-}
 
 -----------------------------------------------------------------------------

System/Posix/Files/ByteString.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 {-# LANGUAGE CApiFFI #-}
 
 -----------------------------------------------------------------------------

System/Posix/IO.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.IO

System/Posix/IO/ByteString.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.IO.ByteString

System/Posix/IO/Common.hsc

@@ -1,11 +1,7 @@
 {-# LANGUAGE CApiFFI #-}
 {-# LANGUAGE NondecreasingIndentation #-}
 {-# LANGUAGE RecordWildCards #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/Process.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Process

System/Posix/Process/ByteString.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 
 -----------------------------------------------------------------------------
 -- |

System/Posix/Resource.hsc

@@ -1,9 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Resource

System/Posix/Semaphore.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Semaphore

System/Posix/SharedMem.hsc

@@ -1,8 +1,4 @@
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.SharedMem

System/Posix/Signals.hsc

@@ -680,18 +680,6 @@ awaitSignal maybe_sigset = do
 foreign import ccall unsafe "sigsuspend"
   c_sigsuspend :: Ptr CSigset -> IO CInt
 
-#if defined(darwin_HOST_OS) && __GLASGOW_HASKELL__ < 706
--- see http://ghc.haskell.org/trac/ghc/ticket/7359#comment:3
--- To be removed when support for GHC 7.4.x is dropped
-foreign import ccall unsafe "__hscore_sigdelset"
-  c_sigdelset   :: Ptr CSigset -> CInt -> IO CInt
-
-foreign import ccall unsafe "__hscore_sigfillset"
-  c_sigfillset  :: Ptr CSigset -> IO CInt
-
-foreign import ccall unsafe "__hscore_sigismember"
-  c_sigismember :: Ptr CSigset -> CInt -> IO CInt
-#else
 foreign import capi unsafe "signal.h sigdelset"
   c_sigdelset   :: Ptr CSigset -> CInt -> IO CInt
 
@@ -700,7 +688,6 @@ foreign import capi unsafe "signal.h sigfillset"
 
 foreign import capi unsafe "signal.h sigismember"
   c_sigismember :: Ptr CSigset -> CInt -> IO CInt
-#endif
 
 foreign import ccall unsafe "sigpending"
   c_sigpending :: Ptr CSigset -> IO CInt

System/Posix/Temp.hsc

@@ -1,9 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Temp

System/Posix/Temp/ByteString.hsc

@@ -1,9 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Temp.ByteString

System/Posix/Terminal.hsc

@@ -1,9 +1,5 @@
 {-# LANGUAGE CApiFFI #-}
-#if __GLASGOW_HASKELL__ >= 709
 {-# LANGUAGE Safe #-}
-#else
-{-# LANGUAGE Trustworthy #-}
-#endif
 -----------------------------------------------------------------------------
 -- |
 -- Module      :  System.Posix.Terminal
@@ -134,14 +130,8 @@ getSlaveTerminalName (Fd fd) = do
   s <- throwErrnoIfNull "getSlaveTerminalName" (c_ptsname fd)
   peekFilePath s
 
-# if __GLASGOW_HASKELL__ < 800
--- see comment in cbits/HsUnix.c
-foreign import ccall unsafe "__hsunix_ptsname"
-  c_ptsname :: CInt -> IO CString
-# else
 foreign import capi unsafe "HsUnix.h ptsname"
   c_ptsname :: CInt -> IO CString
-# endif
 #else
 getSlaveTerminalName _ =
     ioError (errnoToIOError "getSlaveTerminalName" eNOSYS Nothing Nothing)
@@ -194,20 +184,11 @@ foreign import ccall unsafe "__hsunix_push_module"
   c_push_module :: CInt -> CString -> IO CInt
 
 #ifdef HAVE_PTSNAME
-# if __GLASGOW_HASKELL__ < 800
--- see comment in cbits/HsUnix.c
-foreign import ccall unsafe "__hsunix_grantpt"
-  c_grantpt :: CInt -> IO CInt
-
-foreign import ccall unsafe "__hsunix_unlockpt"
-  c_unlockpt :: CInt -> IO CInt
-# else
 foreign import capi unsafe "HsUnix.h grantpt"
   c_grantpt :: CInt -> IO CInt
 
 foreign import capi unsafe "HsUnix.h unlockpt"
   c_unlockpt :: CInt -> IO CInt
-# endif
 #else
 c_grantpt :: CInt -> IO CInt
 c_grantpt _ = return (fromIntegral 0)