[PATCH 4/9] nginx.eclass: port to esplit.eclass

Avoid global-scope use of a heredoc which requires the use of a temporary
file for any size with < EAPI 9 and with large sizes still with >= EAPI 9.

In this case, a followup could be to just use a while/read loop.

Closes: https://bugs.gentoo.org/978940
Signed-off-by: Sam James <[email protected]>
---
 eclass/nginx.eclass | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/eclass/nginx.eclass b/eclass/nginx.eclass
index c77cbcf64eb20..36340a4145828 100644
--- a/eclass/nginx.eclass
+++ b/eclass/nginx.eclass
@@ -42,7 +42,7 @@ esac
 # Nonetheless, it is possible to opt out from the QA check by setting the
 # TMPFILES_OPTIONAL variable.
 TMPFILES_OPTIONAL=1
-inherit multiprocessing perl-functions systemd toolchain-funcs tmpfiles
+inherit esplit multiprocessing perl-functions systemd toolchain-funcs tmpfiles
 
 #-----> ebuild-defined variables <-----
 
@@ -376,7 +376,7 @@ _ngx_set_mod_required_use() {
 		if has "${mod}" "${_NGX_MODULES[@]#+}"; then
 			result=''
 			# Feed comma-delimited dependencies into the dep_list array.
-			IFS=, read -ra dep_list <<< "${_NGX_DEP_TABLE[${mod}]}"
+			mapfile -d '' dep_list < <(IFS=, esplit "${_NGX_DEP_TABLE[${mod}]}")
 			for dep in "${dep_list[@]}"; do
 				has "${dep}" "${_NGX_MODULES[@]#+}" &&
 					result+=" nginx_modules_${dep}"
-- 
2.55.0