ympbuild header functions are read only

src/shcode/pkgbuild_header.sh

@@ -10,18 +10,22 @@ source+=(PKGBUILD)
 sha256sums+=("SKIP")
 pkgdir="$installdir"
 srcdir="$HOME"
+
 function msg(){
     echo "$@"
 }
+readonly -f msg
+
 function msg2(){
     echo "$@"
 }
+readonly -f msg2
 
 arch-meson(){
 	command meson setup \
 	  --prefix        /usr \
 	  --wrap-mode     nodownload \
 	  "$@"
-
 }
+readonly -f arch-meson
 

src/shcode/ympbuild_header.sh

@@ -56,6 +56,8 @@ function meson(){
 function _dump_variables(){
     set -o posix ; set
 }
+readonly -f _dump_variables
+
 function ymp_print_metadata(){
     echo "ymp:"
     echo "  source:"
@@ -121,13 +123,15 @@ function ymp_print_metadata(){
         done
     fi
 }
+readonly -f ymp_print_metadata
 
 function target(){
     if [[ "$1" == "@BUILD_TARGET@" ]] ; then
         return 0
     fi
     return 1
 }
+readonly -f target
 
 function use(){
     if ! echo ${uses[@]} ${uses_extra[@]} ${arch[@]} all extra | grep "$1" >/dev/null; then
@@ -152,15 +156,21 @@ function use(){
         fi
     done
 }
+readonly -f use
+
 function use_opt(){
     if use "$1" ; then
         echo $2
     else
         echo $3
     fi
 }
+readonly -f use_opt
+
 function eapply(){
     for aa in $* ; do
         patch -Np1 "$aa"
     done
 }
+readonly -f eapply
+

src/util/build.vala

@@ -102,7 +102,10 @@ public class builder {
         }
         if(!isfile(srcpath+"/ympbuild")){
             if(isfile(srcpath+"/PKGBUILD")){
-                writefile(srcpath+"/ympbuild", get_pkgbuild_header().replace("@PKGBUILD@",srcpath+"/PKGBUILD") + "\n# Uses PKGBUILD:" + calculate_md5sum(srcpath+"/PKGBUILD"));
+                writefile(srcpath+"/ympbuild", 
+                    get_pkgbuild_header().replace("@PKGBUILD@",srcpath+"/PKGBUILD")
+                    + "\n# Uses PKGBUILD:" + calculate_md5sum(srcpath+"/PKGBUILD")
+                );
             }
         }
         if (!isfile(srcpath + "/ympbuild")) {