diff --git a/mercurial/PKGBUILD b/mercurial/PKGBUILD
index e02c05a024..2295a717e1 100644
--- a/mercurial/PKGBUILD
+++ b/mercurial/PKGBUILD
@@ -4,14 +4,16 @@
 # Contributor: Douglas Soares de Andrade <douglas@archlinux.org>
 
 pkgname=mercurial
-pkgver=6.6.1
+pkgver=6.6.2
 pkgrel=1
 pkgdesc='A scalable distributed SCM tool'
 arch=(x86_64 powerpc64le powerpc64 powerpc riscv64)
 url="https://www.mercurial-scm.org/"
 license=(GPL)
 depends=(python)
-makedepends=(python-docutils)
+makedepends=(python-{build,installer,wheel}
+             python-setuptools
+             python-docutils)
 optdepends=('tk: for the hgk GUI')
 #checkdepends=('breezy' 'cvs' 'git' 'git-lfs' 'python-docutils' 'subversion' 'unzip')
 
@@ -28,13 +30,13 @@ validpgpkeys=(2BCCE14F5C6725AA2EA8AEB7B9C9DC824AA5BDD5
               1F66F8CDF654E905C11DA061A11E01CD0E05D956) # Raphaël Gomès <alphare@raphaelgomes.dev>
 source=(https://www.mercurial-scm.org/release/${pkgname}-${pkgver}.tar.gz{,.asc}
         mercurial.profile)
-sha512sums=('f16240f06a98a088e0229aa6584daa540eee92476a0a7934617c065c9f1012288cf3d6fb2d20fc7b247122bc360201f2e2c1c139c261a834f483bd09bef74d0c'
+sha512sums=('cf45c7c43555bd64d95ec6de2af7952bb50c2fba9ec59ce1afd9437b1fb53e399bd1e6f1b6e17cc5699f598cca4e087f82b3097d2d772219dd0337bbbde2d16b'
             'SKIP'
             '710dcddb24d928efc97370e869d9caa083107929ed9a1086dd2a3ae0caaf2c71e2f29060597e29315b6b15b1616251c42412e268ce737109c48ae4d7aa1b9555')
 
 build() {
   cd $pkgname-$pkgver
-  python setup.py build
+  python -m build -wn
   make -C contrib/chg
 }
 
@@ -46,29 +48,29 @@ check() {
 
 package() {
   cd $pkgname-$pkgver
-  python setup.py install --root="$pkgdir" --skip-build --optimize=1
-  make DESTDIR="${pkgdir}" PREFIX=/usr install
+  python -m installer -d "$pkgdir" dist/*.whl
 
-  install -m644 -D contrib/zsh_completion "$pkgdir/usr/share/zsh/site-functions/_hg"
-  install -m644 -D contrib/bash_completion "$pkgdir/usr/share/bash-completion/completions/hg"
+  # Do not invoke install target because it invokes a soon to be deprecated
+  # `setup.py install` and screws with shebang handling in PEP517 install above
+  make DESTDIR="$pkgdir" PREFIX=/usr install-doc
+
+  install -Dm644 contrib/zsh_completion "$pkgdir/usr/share/zsh/site-functions/_hg"
+  install -Dm644 contrib/bash_completion "$pkgdir/usr/share/bash-completion/completions/hg"
 
   make -C contrib/chg DESTDIR="$pkgdir" PREFIX=/usr install
-  install -m755 contrib/hg-ssh "$pkgdir/usr/bin"
-  install -m755 contrib/hgk "$pkgdir/usr/bin"
 
-  install -d "$pkgdir/usr/share/emacs/site-lisp"
-  install -m644 contrib/{mq.el,mercurial.el} "$pkgdir/usr/share/emacs/site-lisp"
+  install -Dm755 contrib/hg-ssh "$pkgdir/usr/bin"
+  install -Dm755 contrib/hgk "$pkgdir/usr/bin"
 
-  install -Dm644 contrib/vim/HGAnnotate.vim \
-    "$pkgdir/usr/share/vim/vimfiles/syntax/HGAnnotate.vim"
+  install -Dm644 -t "$pkgdir/usr/share/emacs/site-lisp/" contrib/{mq.el,mercurial.el}
+
+  install -Dm644 -t "$pkgdir/usr/share/vim/vimfiles/syntax/" contrib/vim/HGAnnotate.vim
 
   # set some variables
-  install -m755 -d "$pkgdir/etc/profile.d"
-  install -m644 "$srcdir/mercurial.profile" "$pkgdir/etc/profile.d/mercurial.sh"
+  install -Dm644 "$srcdir/mercurial.profile" "$pkgdir/etc/profile.d/mercurial.sh"
 
   # FS#38825 - Add certs config to package
-  install -m755 -d "$pkgdir/etc/mercurial"
-  cat <<-EOF > "$pkgdir/etc/mercurial/hgrc"
+  cat <<-EOF | install -Dm755 /dev/stdin "$pkgdir/etc/mercurial/hgrc"
 	[web]
 	cacerts = /etc/ssl/certs/ca-certificates.crt
 	EOF