I presume this is a Clutter-gst issue, but if it a issue in Gstreamer please reassign the bug.

The problem is that a number configure scripts use gst-inspect to find out if gstreamer plugins/elements are present on the system, Totem does this for one.

Running gst-inspect without a desktop running gives a clutter Critical warning. This happens with either clutter-gst 2.0 or 3.0. Although with 2.0 gst-inspect continues on so it kind of works correctly.

But with clutter-gst 3.0 something causes gst-inspect to hang or crash when debug flags are given. This is really a problem since package builders don't have a desktop running to avert this issue.

Below is gst-inspect output of clutter-gst 2.0 and 3.0 and the backtrace from the gst-inspect crash.

-------------

only clutter-gst 2.0 installed:
# gst-inspect-1.0 videoscale

(gst-plugin-scanner:62667): Clutter-CRITICAL **: Unable to initialize Clutter: Unable to open display. You have to set the DISPLAY environment variable, or use the --display command line argument

<normal gst-inspect-1.0 output)

-------------

only clutter-gst 3.0 installed:
# gst-inspect-1.0 videoscale

(gst-plugin-scanner:68358): Clutter-CRITICAL **: Unable to initialize Clutter: Unable to open display. You have to set the DISPLAY environment variable, or use the --display command line argument

(gst-plugin-scanner:68358): Clutter-Gst-CRITICAL **: Unable to initialize Clutter

ERROR: Caught a segmentation fault while loading plugin file:
/usr/local/lib/gstreamer-1.0/libgstclutter-3.0.so

Please either:
- remove it and restart.
- run with --gst-disable-segtrap --gst-disable-registry-fork and debug.
<gst-inspect-1.0 hangs>

-------------

Running gst-inspect-1.0 with the debug flags:
# gst-inspect-1.0 --gst-disable-segtrap --gst-disable-registry-fork videoscale

(gst-inspect-1.0:68376): Clutter-CRITICAL **: Unable to initialize Clutter: Unable to open display. You have to set the DISPLAY environment variable, or use the --display command line argument

(gst-inspect-1.0:68376): Clutter-Gst-CRITICAL **: Unable to initialize Clutter
Segmentation fault (core dumped)

-------------

Core was generated by `gst-inspect-1.0'.
Program terminated with signal SIGSEGV, Segmentation fault.

+ Trace 234492

            long_name = 0x409d9d "print-blacklist", short_name = 98 'b', flags = 0,
            arg = G_OPTION_ARG_NONE, arg_data = 0x7fffffffead0,
            description = 0x409dad "Print list of blacklisted files", arg_description = 0x0}, {
            long_name = 0x409dcd "print-plugin-auto-install-info", short_name = 0 '\000', flags = 0,
            arg = G_OPTION_ARG_NONE, arg_data = 0x7fffffffeac8,
            description = 0x409dec "Print a machine-parsable list of features the specified plugin or all plugins provide.\n", ' ' <repeats 39 times>, "Useful in connection with external automatic plugin installation mechanism"..., arg_description = 0x0}, {long_name = 0x40af57 "plugin", short_name = 0 '\000',
            flags = 0, arg = G_OPTION_ARG_NONE, arg_data = 0x7fffffffeacc,
            description = 0x409eb6 "List the plugin contents", arg_description = 0x0}, {
            long_name = 0x409ef8 "exists", short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE,
            arg_data = 0x7fffffffeac0,
            description = 0x409ecf "Check if the specified element or plugin exists",
            arg_description = 0x0}, {long_name = 0x409eff "atleast-version", short_name = 0 '\000',
            flags = 0, arg = G_OPTION_ARG_STRING, arg_data = 0x7fffffffeab8,
            description = 0x409f0f "When checking if an element or plugin exists, also check that its version is at least the version specified", arg_description = 0x0}, {
            long_name = 0x409f7b "uri-handlers", short_name = 117 'u', flags = 0,
            arg = G_OPTION_ARG_NONE, arg_data = 0x7fffffffeac4,
            description = 0x409f88 "Print supported URI schemes, with the elements that implement them", arg_description = 0x0}, {long_name = 0x409f07 "version", short_name = 0 '\000', flags = 0,
            arg = G_OPTION_ARG_NONE, arg_data = 0x60be78 <__gst_tools_version>,
            description = 0x409fcb "Print version information and exit", arg_description = 0x0}, {
---Type <return> to continue, or q <return> to quit---
            long_name = 0x0, short_name = 0 '\000', flags = 0, arg = G_OPTION_ARG_NONE,
            arg_data = 0x0, description = 0x0, arg_description = 0x0}}
        ctx = 0x802c4e340
        err = 0x0