fix(build): re-source the PKGBUILD to update changed values

During certain operations like --edit, --pkgver etc the PKGBUILD
may change since last sourced. If a modified checksum of the PKGBUILD
is detected, re-source it before processing.

Signed-off-by: Levente Polyak <anthraxx@archlinux.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/lib/build/build.sh b/src/lib/build/build.sh
index a19dd37..5276653 100644
--- a/src/lib/build/build.sh
+++ b/src/lib/build/build.sh
@@ -134,7 +134,7 @@ pkgctl_build() {
 	local WORKER_SLOT=
 
 	# variables
-	local _arch path pkgbase pkgrepo source
+	local _arch path pkgbase pkgrepo source pkgbuild_checksum
 
 	while (( $# )); do
 		case $1 in
@@ -311,6 +311,7 @@ pkgctl_build() {
 		. ./PKGBUILD
 		pkgbase=${pkgbase:-$pkgname}
 		pkgrepo=${REPO}
+		pkgbuild_checksum=$(b2sum PKGBUILD | awk '{print $1}')
 		msg "Building ${pkgbase}"
 
 		# auto-detection of build target
@@ -412,6 +413,12 @@ pkgctl_build() {
 			updpkgsums
 		fi
 
+		# re-source the PKGBUILD if it changed
+		if [[ ${pkgbuild_checksum} != "$(b2sum PKGBUILD | awk '{print $1}')" ]]; then
+			# shellcheck source=contrib/makepkg/PKGBUILD.proto
+			. ./PKGBUILD
+		fi
+
 		# execute build
 		for arch in "${BUILD_ARCH[@]}"; do
 			if [[ -n $arch ]]; then