do not overwrite prepare if it already existed

1 files changed, 10 insertions, 4 deletions

diff --git a/community/lbzip2/PKGBUILD b/community/lbzip2/PKGBUILD
index 682e25f3..1bb52877 100644
--- a/community/lbzip2/PKGBUILD
+++ b/community/lbzip2/PKGBUILD
@@ -2,7 +2,13 @@
 source+=('4af4a4a71827c0bc5e0ec67af23edef4f15cee8e.patch')
 sha256sums+=('5eca4665b147655ce99f9ae5eff50e7db2714ba957e41e20b50d80533aeb6bef')
 
-prepare() {
-  cd "${srcdir}"/$pkgname-$pkgver
-  patch -p1 -i ../4af4a4a71827c0bc5e0ec67af23edef4f15cee8e.patch
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "${srcdir}"/$pkgname-$pkgver \
+       patch -p1 -i ../4af4a4a71827c0bc5e0ec67af23edef4f15cee8e.patch
+  '
+)"