do not overwrite prepare if it already existed

18 files changed, 193 insertions, 90 deletions

diff --git a/community/bazel/PKGBUILD b/community/bazel/PKGBUILD
index dbf28e9b..7dd96e62 100644
--- a/community/bazel/PKGBUILD
+++ b/community/bazel/PKGBUILD
@@ -1,6 +1,11 @@
 depends=("${depends[@]/java-environment>=8/java-environment=8}")
 
-prepare() {
-    sed -i 's|#error This code for 64 bit Unix|//#error This code for 64 bit Unix|g' \
-		${srcdir}/src/tools/singlejar/mapped_file.h
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i sed -i '"'"'s|#error This code for 64 bit Unix|//#error This code for 64 bit Unix|g'"'"' ${srcdir}/src/tools/singlejar/mapped_file.h
+  '
+)"
diff --git a/community/embree/PKGBUILD b/community/embree/PKGBUILD
index ee543197..522a3482 100644
--- a/community/embree/PKGBUILD
+++ b/community/embree/PKGBUILD
@@ -15,7 +15,13 @@ eval "$(
 # applying a counter-patch here
 source+=('embree-3.2.0-intrinsic.patch')
 sha256sums+=('7d5e44a034b02e14d7d37cd038d8c279d13d66b54a449c09e0687458f117723f')
-prepare() {
-  cd $pkgname-$pkgver
-  patch -Np1 -i "$srcdir/embree-3.2.0-intrinsic.patch"
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "$srcdir/$pkgname-$pkgver" \
+       patch -Np1 -i "$srcdir/embree-3.2.0-intrinsic.patch"
+  '
+)"
diff --git a/community/exa/PKGBUILD b/community/exa/PKGBUILD
index 1de368f8..f0d6c232 100644
--- a/community/exa/PKGBUILD
+++ b/community/exa/PKGBUILD
@@ -3,7 +3,13 @@
 source+=('exa-ascii-deprecated.patch')
 md5sums+=('ce36630a183f5d5be9f1a334bdf8a7cc')
 
-prepare() {
-  cd "$pkgname"
-  patch -Np1 -i ../exa-ascii-deprecated.patch
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "$srcdir/$pkgname" \
+       patch -Np1 -i ../exa-ascii-deprecated.patch
+  '
+)"
diff --git a/community/fig2dev/PKGBUILD b/community/fig2dev/PKGBUILD
index b761add0..56b41da9 100644
--- a/community/fig2dev/PKGBUILD
+++ b/community/fig2dev/PKGBUILD
@@ -1,6 +1,12 @@
-prepare() {
-  find "${pkgname}-${pkgver}" \
-    -exec sed -i '
-      s/Invalid resolution information (-1)\./Invalid spline object./g
-    ' {} \;
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i find "${srcdir}/${pkgname}-${pkgver}" \
+         -exec sed -i '"'"' \
+           s/Invalid resolution information (-1)\./Invalid spline object./g \
+         '"'"' {} \;
+  '
+)"
diff --git a/community/haskell-gauge/PKGBUILD b/community/haskell-gauge/PKGBUILD
index a5bd662e..eeba4490 100644
--- a/community/haskell-gauge/PKGBUILD
+++ b/community/haskell-gauge/PKGBUILD
@@ -1,10 +1,15 @@
 # temporarily disabled 'verbose' test, see upstream:
 # https://github.com/vincenthz/hs-gauge/issues/54
 
-prepare() {
-    cd "${srcdir}/${_hkgname}-${pkgver}"
-
-    sed -i '/test-suite verbose/, /test-suite quick/ { s/\(.*\)/#\1/ }' gauge.cabal	
-    sed -i 's/#test-suite quick/test-suite quick/' gauge.cabal
-    sed -i '/^#.*/d' gauge.cabal
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "${srcdir}/${_hkgname}-${pkgver}" \
+       sed -i '"'"'/test-suite verbose/, /test-suite quick/ { s/\(.*\)/#\1/ }'"'"' gauge.cabal \
+       sed -i '"'"'s/#test-suite quick/test-suite quick/'"'"' gauge.cabal \
+       sed -i '"'"'/^#.*/d'"'"' gauge.cabal
+  '
+)"
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
+  '
+)"
diff --git a/community/libnids/PKGBUILD b/community/libnids/PKGBUILD
index 13578e05..7a510454 100644
--- a/community/libnids/PKGBUILD
+++ b/community/libnids/PKGBUILD
@@ -5,7 +5,13 @@
 source+=('libnids-1.24-inline.patch')
 sha256sums+=('3aea2351877c2a789d753ac66f1323a3d575dead9fb04c559e221dbebdfc7e3e')
 
-prepare() {
-  cd $pkgname-$pkgver
-  patch -Np1 -i "$srcdir/libnids-1.24-inline.patch"
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "$srcdir/$pkgname-$pkgver" \
+       patch -Np1 -i "$srcdir/libnids-1.24-inline.patch"
+  '
+)"
diff --git a/community/python-libnacl/PKGBUILD b/community/python-libnacl/PKGBUILD
index ca82c81d..6eda5b5e 100644
--- a/community/python-libnacl/PKGBUILD
+++ b/community/python-libnacl/PKGBUILD
@@ -1,9 +1,15 @@
 # see https://bbs.archlinux32.org/viewtopic.php?pid=224
 # and https://github.com/saltstack/libnacl/issues/103
 
-prepare() {
-  sed -i '
-    s/m, mlen,/m, ctypes.byref(mlen),/
-  ' "libnacl-${pkgver}/libnacl/__init__.py"
-  cp -r libnacl-$pkgver{,-py2}
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i sed -i '"'"' \
+         s/m, mlen,/m, ctypes.byref(mlen),/ \
+       '"'"' "libnacl-${pkgver}/libnacl/__init__.py" \
+       cp -r libnacl-$pkgver{,-py2}
+  '
+)"
diff --git a/community/smbnetfs/PKGBUILD b/community/smbnetfs/PKGBUILD
index 6c6147a8..8156b28e 100644
--- a/community/smbnetfs/PKGBUILD
+++ b/community/smbnetfs/PKGBUILD
@@ -1,4 +1,10 @@
 # https://sourceforge.net/p/smbnetfs/git/ci/f0e109dcc9e14b914d8f5877b4482e79d24a0ad6/
-prepare() {
-  sed -i '\,^#include <attr/xattr.h>$,d' "$srcdir"/$pkgname-$pkgver/src/function.c
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i sed -i '"'"'\,^#include <attr/xattr.h>$,d'"'"' "$srcdir"/$pkgname-$pkgver/src/function.c
+  '
+)"
diff --git a/community/vamp-aubio-plugins/PKGBUILD b/community/vamp-aubio-plugins/PKGBUILD
index c07e32f7..7d884b2e 100644
--- a/community/vamp-aubio-plugins/PKGBUILD
+++ b/community/vamp-aubio-plugins/PKGBUILD
@@ -1,5 +1,11 @@
-prepare() {
-  sed -i '
-    48 s/x86_64/i686/
-  ' vamp-aubio-plugins-0.5.1/wscript
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i sed -i '"'"' \
+         48 s/x86_64/i686/ \
+       '"'"' vamp-aubio-plugins-0.5.1/wscript
+  '
+)"
diff --git a/community/xaos/PKGBUILD b/community/xaos/PKGBUILD
index d3dd57f2..15dd3e6c 100644
--- a/community/xaos/PKGBUILD
+++ b/community/xaos/PKGBUILD
@@ -1,8 +1,14 @@
 source+=('xaos.patch')
 sha256sums+=('b07cdc88be38a30a40bccc2f999bff50ae8a25fc10ed4f2f7c7e2ff117f085e5')
 
-prepare() {
-  patch -p1 -N -i "$srcdir/xaos.patch" -d "$srcdir/$pkgname-$pkgver"
-  gendesk -f -n --pkgname=$pkgname --pkgdesc="$pkgdesc" \
-    --categories='Application;Graphics'
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i patch -p1 -N -i "$srcdir/xaos.patch" -d "$srcdir/$pkgname-$pkgver" \
+       gendesk -f -n --pkgname=$pkgname --pkgdesc="$pkgdesc" \\\
+         --categories='"'"'Application;Graphics'"'"'
+  '
+)"
diff --git a/core/gpgme/PKGBUILD b/core/gpgme/PKGBUILD
index d7f790eb..d48edca2 100644
--- a/core/gpgme/PKGBUILD
+++ b/core/gpgme/PKGBUILD
@@ -4,10 +4,16 @@
 source+=(0004-Avoid-Y2038-problem-on-32-bit-architectures.patch)
 sha256sums+=('0c788590e0bb7cc9da04457f94360ceef9cb9fc0525e6bfbf9fbb8d72801ae8f')
 
-prepare() {
-  cd ${pkgbase}-${pkgver}
-  patch -Np1 -i "$srcdir/0004-Avoid-Y2038-problem-on-32-bit-architectures.patch"
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "${srcdir}/${pkgbase}-${pkgver}" \
+       patch -Np1 -i "$srcdir/0004-Avoid-Y2038-problem-on-32-bit-architectures.patch"
+  '
+)"
 
 # no GUI stuff on i486
 makedepends=(${makedepends[@]//qt5-base/})
diff --git a/core/libaio/PKGBUILD b/core/libaio/PKGBUILD
index a4cbd68f..1809af7b 100644
--- a/core/libaio/PKGBUILD
+++ b/core/libaio/PKGBUILD
@@ -11,7 +11,13 @@ eval "$(
 # see also FS#60283
 source+=('libaio-0.3.111-sizeof-template.patch')
 md5sums+=('8c240ea721460fa2d34f9e134b57544d')
-prepare() {
-  cd "${srcdir}/${pkgname}-${pkgver}"
-  patch -Np1 -i ../libaio-0.3.111-sizeof-template.patch
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "${srcdir}/${pkgname}-${pkgver}" \
+       patch -Np1 -i ../libaio-0.3.111-sizeof-template.patch
+  '
+)"
diff --git a/core/libgpg-error/PKGBUILD b/core/libgpg-error/PKGBUILD
index 304d11ab..e6bb70dd 100644
--- a/core/libgpg-error/PKGBUILD
+++ b/core/libgpg-error/PKGBUILD
@@ -1,9 +1,13 @@
 # gawk namspace conflict, see FS#63761
 
-prepare() {
-  cd ${pkgname}-${pkgver}
-  sed -i \
-  -e "s/namespace/varerrno/g" \
-  src/{Makefile.am,mkstrtable.awk}
-  ./autogen.sh
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "${srcdir}/${pkgname}-${pkgver}" \
+       sed -i -e "s/namespace/varerrno/g" src/{Makefile.am,mkstrtable.awk} \
+       ./autogen.sh
+  '
+)"
diff --git a/core/m4/PKGBUILD b/core/m4/PKGBUILD
index ad7195a3..99059a2a 100644
--- a/core/m4/PKGBUILD
+++ b/core/m4/PKGBUILD
@@ -2,8 +2,14 @@
 source+=('m4-1.4.18-glibc-change-work-around.patch')
 md5sums+=('01968e8f3a5be62de1c849668db8042b')
 
-prepare() {
-  cd $pkgname-$pkgver
-  patch -p1 -i "$srcdir/m4-1.4.18-glibc-change-work-around.patch"
-  echo "#define _IO_IN_BACKUP 0x100" >> lib/stdio-impl.h
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd $pkgname-$pkgver \
+       patch -p1 -i "$srcdir/m4-1.4.18-glibc-change-work-around.patch" \
+       echo "#define _IO_IN_BACKUP 0x100" >> lib/stdio-impl.h
+  '
+)"
diff --git a/extra/devtools/PKGBUILD b/extra/devtools/PKGBUILD
index 19bd31a0..37f0da9d 100644
--- a/extra/devtools/PKGBUILD
+++ b/extra/devtools/PKGBUILD
@@ -17,14 +17,20 @@ unset b2sums
 
 makedepends+=('asciidoc')
 
-prepare() {
-  cd "${srcdir}/${pkgname}32-v${pkgver}"
-  sed -i '
-    s,\$working_dir/etc/pacman\.d/mirrorlist32,/dev/null,
-    s/mirrorlist32/mirrorlist/g
-  ' 'arch-nspawn.in'
-  sed -i 's@s,/mirrorlist\\\$\$,\\032,;\?@@' 'Makefile'
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "${srcdir}/${pkgname}32-v${pkgver}" \
+       sed -i '"'"' \
+         s,\$working_dir/etc/pacman\.d/mirrorlist32,/dev/null, \
+         s/mirrorlist32/mirrorlist/g \
+       '"'"' '"'"'arch-nspawn.in'"'"' \
+       sed -i '"'"'s@s,/mirrorlist\\\$\$,\\032,;\?@@'"'"' '"'"'Makefile'"'"'
+  '
+)"
 
 eval "$(
   declare -f prepare build check package | \
diff --git a/extra/mutter/PKGBUILD b/extra/mutter/PKGBUILD
index 60ceb6fa..8a8a4f44 100644
--- a/extra/mutter/PKGBUILD
+++ b/extra/mutter/PKGBUILD
@@ -9,9 +9,14 @@ eval "$(
 source+=(fix-build.diff)
 sha256sums+=('28aa24daed161f2566ca2b159beb43285184c533956b851a7eb318de741da935')
 
-prepare() {
-  cd $pkgname
-
-  # fix build with libglvnd's EGL headers
-  git apply -3 ../fix-build.diff
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $i cd "$srcdir/$pkgname" \
+       # fix build with libglvnd's EGL headers \
+       git apply -3 ../fix-build.diff
+  '
+)"
diff --git a/extra/xfce4-diskperf-plugin/PKGBUILD b/extra/xfce4-diskperf-plugin/PKGBUILD
index f42f1cb5..74532d0b 100644
--- a/extra/xfce4-diskperf-plugin/PKGBUILD
+++ b/extra/xfce4-diskperf-plugin/PKGBUILD
@@ -1,5 +1,11 @@
 # see https://bugs.archlinux.org/task/60632
-prepare() {
-  cd $pkgname-$pkgver
-  sed -i '/#include <sys\/types.h>/ a #include <sys\/sysmacros.h>/' panel-plugin/devperf.c 
-}
+eval "$(
+  {
+    declare -f prepare || \
+    printf 'prepare() {\n}\n'
+  } \
+  | sed '
+    $ i cd "$srcdir/$pkgname-$pkgver"\
+        sed -i '"'"'/#include <sys\/types.h>/ a #include <sys\/sysmacros.h>/'"'"' panel-plugin/devperf.c
+  '
+)"