Drop support of GHC 8.4

Author: Bodigrim

.github/workflows/haskell-ci.yml

@@ -78,17 +78,12 @@ jobs:
             compilerVersion: 8.6.5
             setup-method: ghcup
             allow-failure: false
-          - compiler: ghc-8.4.4
-            compilerKind: ghc
-            compilerVersion: 8.4.4
-            setup-method: ghcup
-            allow-failure: false
       fail-fast: false
     steps:
       - name: apt-get install
         run: |
           apt-get update
-          apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5 libnuma-dev
+          apt-get install -y --no-install-recommends gnupg ca-certificates dirmngr curl git software-properties-common libtinfo5
       - name: Install GHCup
         run: |
           mkdir -p "$HOME/.ghcup/bin"
@@ -271,7 +266,7 @@ jobs:
           ${CABAL} -vnormal check
       - name: haddock
         run: |
-          if [ $((HCNUMVER >= 80600)) -ne 0 ] ; then $CABAL v2-haddock --disable-documentation --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all ; fi
+          $CABAL v2-haddock --disable-documentation --haddock-all $ARG_COMPILER --with-haddock $HADDOCK $ARG_TESTS $ARG_BENCH all
       - name: unconstrained build
         run: |
           rm -f cabal.project.local

cabal.haskell-ci

@@ -1,2 +1 @@
 installed: -directory -unix -bytestring -filepath
-haddock: >= 8.6

htar/htar.cabal

@@ -20,14 +20,14 @@ build-type:      Simple
 cabal-version:   2.0
 tested-with:     GHC==9.12.1, GHC==9.10.1, GHC==9.8.2,
                  GHC==9.6.5, GHC==9.4.8, GHC==9.2.8, GHC==9.0.2,
-                 GHC==8.10.7, GHC==8.8.4, GHC==8.6.5, GHC==8.4.4
+                 GHC==8.10.7, GHC==8.8.4, GHC==8.6.5
 
 executable htar
   default-language: Haskell2010
   main-is: htar.hs
   ghc-options: -Wall -rtsopts
   build-depends:
-    base       >= 4.9 && < 5,
+    base       >= 4.12 && < 5,
     time       >= 1.1,
     directory  >= 1.0,
     filepath   >= 1.0,

tar.cabal

@@ -31,7 +31,7 @@ extra-doc-files: changelog.md
                  README.md
 tested-with:     GHC==9.12.1, GHC==9.10.1, GHC==9.8.2,
                  GHC==9.6.5, GHC==9.4.8, GHC==9.2.8, GHC==9.0.2,
-                 GHC==8.10.7, GHC==8.8.4, GHC==8.6.5, GHC==8.4.4
+                 GHC==8.10.7, GHC==8.8.4, GHC==8.6.5
 
 source-repository head
   type: git
@@ -49,7 +49,7 @@ library
 
 library tar-internal
   default-language: Haskell2010
-  build-depends: base       >= 4.11  && < 5,
+  build-depends: base       >= 4.12  && < 5,
                  array                 < 0.6,
                  bytestring >= 0.10 && < 0.13,
                  containers >= 0.2  && < 0.8,