gstreamer: unbreak finding plugins in $NIX_PROFILES (#20207)

* gstreamer-1.0: make gst-launch find plugins again

gst-launch and friends are in the "dev" output now.

* gstreamer-1.0: lower priority on plugins from $NIX_PROFILES

Suffix the plugin paths from $NIX_PROFILES instead of prefixing them to
$GST_PLUGIN_SYSTEM_PATH. If a program has specifically set up its plugin
path to some custom/specific version, we don't want plugins from
$NIX_PROFILES to mess things up by having higher priority.

1 files changed, 2 insertions, 2 deletions

diff --git a/pkgs/development/libraries/gstreamer/core/default.nix b/pkgs/development/libraries/gstreamer/core/default.nix
index da15755355d3..da6a8c7a74a4 100644
--- a/pkgs/development/libraries/gstreamer/core/default.nix
+++ b/pkgs/development/libraries/gstreamer/core/default.nix
@@ -34,8 +34,8 @@ stdenv.mkDerivation rec {
   '';
 
   postInstall = ''
-    for prog in "$out/bin/"*; do
-        wrapProgram "$prog" --prefix GST_PLUGIN_SYSTEM_PATH : "\$(unset _tmp; for profile in \$NIX_PROFILES; do _tmp="\$profile/lib/gstreamer-1.0''$\{_tmp:+:\}\$_tmp"; done; printf "\$_tmp")"
+    for prog in "$dev/bin/"*; do
+        wrapProgram "$prog" --suffix GST_PLUGIN_SYSTEM_PATH : "\$(unset _tmp; for profile in \$NIX_PROFILES; do _tmp="\$profile/lib/gstreamer-1.0''$\{_tmp:+:\}\$_tmp"; done; printf "\$_tmp")"
     done
   '';