tcl: split development files to separate package

This is to remove any potential conflict with mingw tcl package

tcl/PKGBUILD

@@ -1,9 +1,10 @@
 # Maintainer (MSYS2): Ray Donnelly <mingw.android@gmail.com>
 # Maintainer (ArchLinux): Eric Bélanger <eric@archlinux.org>
 
-pkgname=tcl
+pkgbase=tcl
+pkgname=('tcl' 'tcl-devel')
 pkgver=8.6.12
-pkgrel=2
+pkgrel=3
 pkgdesc="The Tcl scripting language"
 arch=('i686' 'x86_64')
 url="https://tcl.sourceforge.io/"
@@ -56,13 +57,13 @@ build() {
 #   make test
 # }
 
-package() {
+package_tcl() {
   cd tcl${pkgver}/unix
   make INSTALL_ROOT="${pkgdir}" install install-private-headers
 
   install -Dm644 libtcl${pkgver%.*}.dll.a "${pkgdir}"/usr/lib/libtcl${pkgver%.*}.dll.a
 
-  install -Dm644 ../license.terms "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
+  install -Dm644 ../license.terms "${pkgdir}/usr/share/licenses/${pkgbase}/LICENSE"
 
   # install build system macros
   install -Dm644 tcl.m4 "${pkgdir}"/usr/share/aclocal/tcl.m4
@@ -92,4 +93,24 @@ package() {
   ln -s "${pkgdir}/usr/lib/libtcl${pkgver%.*}.dll.a" "${pkgdir}/usr/lib/libtcl.dll.a"
   ln -s "${pkgdir}/usr/lib/libtclstub${pkgver%.*}.a" "${pkgdir}/usr/lib/libtclstub.a"
   ln -s "${pkgdir}/usr/lib/tclConfig.sh" "${pkgdir}/usr/lib/tcl${pkgver%.*}/tclConfig.sh"
+
+  # split package (from Alpine Linux)
+  cd "$pkgdir"
+  for i in usr/include usr/lib/pkgconfig \
+   $(find usr/lib -name '*.a' -o -name '*.dll.a') \
+   $(find . -name '*.c' -o -name '*Config.sh'); do
+    if [ -e "$pkgdir/$i" ] || [ -L "$pkgdir/$i" ]; then
+      mkdir -p ${srcdir}/tcl-devel/${i%/*}
+      mv "$pkgdir/$i" ${srcdir}/tcl-devel/${i%/*}/
+      rmdir "$pkgdir/${i%/*}" 2>/dev/null || :
+    fi
+  done
+}
+
+package_tcl-devel() {
+  depends=("tcl=${pkgver}")
+  groups=('development')
+  pkgdesc+=" (development files)"
+
+  mv "$srcdir"/tcl-devel/* "$pkgdir"
 }