Patch for AUR package PKGBUILD gerbil-scheme-git

PKGBUILD.patch

commit b8052e625f889eb023d2259602383871da237244
Author: Matt Spaulding <matt@mattops.io>
Date:   Thu Sep 24 16:00:22 2020 -0700

    * Update use of git to latest standards
    * Support new Gerbil build system
    * Fix profile file and include GERBIL_GSC

diff --git a/PKGBUILD b/PKGBUILD
index 08ce743..6e4a562 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -8,8 +8,8 @@
 
 # Maintainer: Peter <craven@gmx.net>
 pkgname=gerbil-scheme-git
-pkgver=0.12
-pkgrel=4
+pkgver=0.16.r139.g41625f7b
+pkgrel=1
 pkgdesc="Gerbil is an opinionated dialect of Scheme designed for Systems Programming, with a state of the art macro and module system on top of the Gambit runtime."
 arch=(x86_64 i686)
 url="https://github.com/vyzo/gerbil"
@@ -23,46 +23,27 @@ replaces=()
 backup=()
 options=()
 install=
-source=()
-
+source=('gerbil::git+https://github.com/vyzo/gerbil.git#branch=master')
+md5sums=('SKIP')
 
 
 noextract=()
 #generate with 'makepkg -g'
 
-_gitroot=https://github.com/vyzo/gerbil.git
-_gitname=gerbil
+pkgver() {
+  cd gerbil
+  # cutting off 'v' prefix that presents in the git tag
+  git describe --tags | sed 's/^v//;s/\([^-]*-g\)/r\1/;s/-/./g'
+}
 
 build() {
-  cd "$srcdir"
-  msg "Connecting to GIT server...."
-
-  if [[ -d "$_gitname" ]]; then
-    cd "$_gitname" && git pull origin
-    msg "The local files are updated."
-  else
-    git clone "$_gitroot" "$_gitname"
-  fi
-
-  msg "GIT checkout done or server timeout"
-  msg "Starting build..."
-
-  rm -rf "$srcdir/$_gitname-build"
-  git clone "$srcdir/$_gitname" "$srcdir/$_gitname-build"
-  cd "$srcdir/$_gitname-build"
-
-  #
-  # BUILD HERE
-  #
-  mkdir -p binx
-  ln -s /usr/bin/gambitc binx/gsc
-  export PATH=$(pwd)/binx:$PATH
-  cd src/
-  ./build.sh
+  cd "$srcdir/gerbil/src"
+  ./configure
+  GERBIL_GSC=/usr/bin/gsc-script ./build.sh
 }
 
 package() {
-  cd "$srcdir/$_gitname-build"
+  cd "$srcdir/gerbil"
   mkdir -p ${pkgdir}/opt/gerbil-scheme-git
   cp -R bin ${pkgdir}/opt/gerbil-scheme-git/bin
   cp -R doc ${pkgdir}/opt/gerbil-scheme-git/doc
@@ -73,8 +54,9 @@ package() {
   mkdir -p ${pkgdir}/etc/profile.d/
   cat <<EOF > ${pkgdir}/etc/profile.d/gerbil-scheme-git.sh
 #!/bin/bash
+export GERBIL_GSC=/usr/bin/gsc-script
 export GERBIL_HOME=/opt/gerbil-scheme-git
-export PATH=/opt/gerbil-scheme-git/bin:$PATH
+export PATH=/opt/gerbil-scheme-git/bin:\$PATH
 EOF
 }