epm repack: fix shebang for obsidian and chromium-gost-stable

repack.d/chromium-gost-stable.sh

@@ -28,6 +28,7 @@ install_deps
 # use standalone config dir
 subst 's|exec -a "$0" "$HERE/chrome" "$@"||' $BUILDROOT/$PRODUCTDIR/$PRODUCT
 cat <<EOF >>$BUILDROOT/$PRODUCTDIR/$PRODUCT
+#!/bin/sh
 if ! [[ "\$*" =~ \-user\-data\-dir= ]]; then
        exec -a "\$0" "\$HERE/chrome" "-user-data-dir=\$HOME/.config/chromium-gost" "\$@"
 else

repack.d/obsidian.sh

@@ -15,14 +15,9 @@ cleanup
 #add_bin_commands
 
 if [ ! -f "$BUILDROOT/usr/bin/$PRODUCT" ] ; then
-    mkdir -p $BUILDROOT/usr/bin
-    subst "s|%files|%files\n%_bindir/$PRODUCT|" $SPEC
-    # fix lib.req: ERROR: /tmp/.private/lav/tmp.lPI2zBE3UA/obsidian_0.13.31_amd64.deb.tmpdir/obsidian-0.13.31/usr/bin/obsidian: library libffmpeg.so not found
-    echo "exec $PRODUCTDIR/$PRODUCT" > $BUILDROOT/usr/bin/$PRODUCT
-    chmod a+x $BUILDROOT/usr/bin/$PRODUCT
+    add_bin_exec_command
 fi
 
-
 install_deps
 
 fix_chrome_sandbox