Force building with ghc-9.6.5

Pull in the ghc-9.6 port branch for now.

The default makepkg configuration sets LDFLAGS but not LD.
GHC used to take this as its cue to select its own choice of LD.
However GHC would *not* check that its choice of LD supports LDFLAGS.
This is a problem for dependencies with C components, which get linked
using this LD.

A fix[1] for this has landed in ghc 9.6.5 on 2024-04-16, and ghc's
installed using the current ghcup HEAD (starting with 7a684ad[2]) will
have `--disable-ld-override` passed, which also fixes the issue.

[1] - https://gitlab.haskell.org/ghc/ghc/-/issues/24565
[2] - haskell/ghcup-hs#1032

.SRCINFO

@@ -1,7 +1,7 @@
 pkgbase = ghcup-hs-static-git
 	pkgdesc = GHC toolchain installer
-	pkgver = 0.1.22.0.r11.g63e714d
-	pkgrel = 2
+	pkgver = 0.1.22.0.r45.g4513c39
+	pkgrel = 1
 	url = https://www.haskell.org/ghcup/
 	install = ghcup-hs.install
 	arch = x86_64
@@ -19,7 +19,7 @@ pkgbase = ghcup-hs-static-git
 	provides = ghcup-hs-bin
 	conflicts = ghcup-hs
 	conflicts = ghcup-hs-bin
-	source = ghcup-hs-static-git::git+https://github.com/haskell/ghcup-hs
+	source = ghcup-hs-static-git::git+https://github.com/haskell/ghcup-hs#branch=ghc-9.6
 	sha256sums = SKIP
 
 pkgname = ghcup-hs-static-git

PKGBUILD

@@ -4,8 +4,8 @@
 
 pkgname=ghcup-hs-static-git
 _pkgname="${pkgname%-static-git}"
-pkgver=0.1.22.0.r11.g63e714d
-pkgrel=2
+pkgver=0.1.22.0.r45.g4513c39
+pkgrel=1
 pkgdesc='GHC toolchain installer'
 arch=('x86_64' 'aarch64' 'armv7h' 'i686')
 url="https://www.haskell.org/ghcup/"
@@ -16,7 +16,7 @@ optdepends=('curl'
             "ncurses5-compat-libs: using older ghc's linking against libtinfo.so.5")
 provides=("$_pkgname" "$_pkgname"-bin)
 conflicts=("$_pkgname" "$_pkgname"-bin)
-source=($pkgname::git+https://github.com/haskell/ghcup-hs)
+source=($pkgname::git+https://github.com/haskell/ghcup-hs#branch=ghc-9.6)
 sha256sums=('SKIP')
 install="$_pkgname.install"
 
@@ -25,8 +25,18 @@ pkgver() {
     git describe --tags --long | sed 's/^v//;s/\([^-]*-g\)/r\1/;s/-/./g'
 }
 
+_allowNewerDeps() {
+    yq -i --yaml-output --args "$@" -- \
+        '."allow-newer-deps" += $ARGS.positional' \
+        stack.yaml
+}
+
 prepare() {
     cd "$pkgname"
+    stack config set resolver lts-22.19 # ghc-9.6.4
+    echo 'compiler: ghc-9.6.5' >> stack.yaml
+
+    _allowNewerDeps cabal-install-parsers ghcup semigroupoids unix-bytestring
 
     # enable tests
     yq -i --yaml-output \