Get rid of language-bash

And clean up detection logic a bit. We also don't
read /etc/lsb-release manually more, since it's format is
not specified.

ghcup.cabal

@@ -98,9 +98,6 @@ common http-io-streams
 common io-streams
   build-depends: io-streams >=1.5
 
-common language-bash
-  build-depends: language-bash >=0.9
-
 common lzma
   build-depends: lzma >=0.0.0.3
 
@@ -182,6 +179,9 @@ common unix
 common unix-bytestring
   build-depends: unix-bytestring >=0.3
 
+common unordered-containers
+  build-depends: unordered-containers >= 0.2.10.0
+
 common uri-bytestring
   build-depends: uri-bytestring >=0.3.2.2
 
@@ -194,9 +194,6 @@ common vector
 common versions
   build-depends: versions >=3.5
 
-common waargonaut
-  build-depends: waargonaut >=0.8
-
 common word8
   build-depends: word8 >=0.1.3
 
@@ -242,7 +239,6 @@ library
     , hpath-filepath
     , hpath-io
     , hpath-posix
-    , language-bash
     , lzma
     , megaparsec
     , monad-logger
@@ -267,6 +263,7 @@ library
     , transformers
     , unix
     , unix-bytestring
+    , unordered-containers
     , uri-bytestring
     , utf8-string
     , vector
@@ -288,7 +285,7 @@ library
     GHCup.Types.JSON
     GHCup.Types.Optics
     GHCup.Utils
-    GHCup.Utils.Bash
+    GHCup.Utils.OsRelease
     GHCup.Utils.Dirs
     GHCup.Utils.File
     GHCup.Utils.Logger