Rename perl-ack to ack

it's called that way in most other distros:
https://repology.org/project/ack/versions

ack/PKGBUILD

@@ -1,8 +1,7 @@
 # Maintainer: Alexey Pavlov <alexpux@gmail.com>
 # Contributor: Ray Donnelly <mingw.android@gmail.com>
 
-_realname=ack
-pkgname=perl-${_realname}
+pkgname=ack
 pkgver=3.7.0
 pkgrel=1
 pkgdesc="A Perl-based grep replacement, aimed at programmers with large trees of heterogeneous source code"
@@ -15,32 +14,32 @@ license=('GPL' 'PerlArtistic')
 depends=('perl-File-Next')
 groups=('perl-modules')
 options=(!emptydirs)
-source=("https://www.cpan.org/authors/id/P/PE/PETDANCE/${_realname}-v${pkgver}.tar.gz"
+source=("https://www.cpan.org/authors/id/P/PE/PETDANCE/${pkgname}-v${pkgver}.tar.gz"
         '0002-ack-2.12-match-makefiles-with-more-generality.patch')
 sha256sums=('ea7caa14f757de083310ed2cba298661ddcca5dee06ec8f18043ea625a79df20'
             '3f2bec65a174465babb5fef6c179ae25b7d85bee2263683396b574c3d3d33cab')
-msys2_references=(
-  'archlinux: ack'
-)
+conflicts=("perl-ack")
+provides=("perl-ack=${pkgver}")
+replaces=("perl-ack")
 
 prepare() {
-  cd "${srcdir}/${_realname}-v${pkgver}"
+  cd "${srcdir}/${pkgname}-v${pkgver}"
   patch -p1 -i ${srcdir}/0002-ack-2.12-match-makefiles-with-more-generality.patch
 }
 
 build() {
-  cd "${srcdir}/${_realname}-v${pkgver}"
+  cd "${srcdir}/${pkgname}-v${pkgver}"
   PERL_MM_USE_DEFAULT=1 perl Makefile.PL INSTALLDIRS=vendor
   make
 }
 
 check() {
-  cd "${srcdir}/${_realname}-v${pkgver}"
+  cd "${srcdir}/${pkgname}-v${pkgver}"
   # some standalone tests are failing
   make test || true
 }
 
 package() {
-  cd "${srcdir}/${_realname}-v${pkgver}"
+  cd "${srcdir}/${pkgname}-v${pkgver}"
   make install DESTDIR="${pkgdir}"
 }