[MacPorts] #52897: libgpg-error @1.25_0: breaks gnupg21

[MacPorts]

#52897: libgpg-error @1.25_0: breaks gnupg21
------------------------+--------------------------------
 Reporter:  jdswinbank  |      Owner:  macports-tickets@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.4
 Keywords:              |       Port:  libgpg-error
------------------------+--------------------------------
 Following an upgrade to libgpg-error 1.25, I see the following:

 {{{
 $ port installed libgpg-error gnupg21
 The following ports are currently installed:
   gnupg21 @2.1.15_0+pinentry_mac (active)
   libgpg-error @1.25_0 (active)

 $ gpg-agent
 Assertion failed: (res == 0), function enter_npth, file npth.c, line 123.
 Abort trap: 6
 }}}

 The backtrace from gpg-agent shows this is coming from libgpg-error:

 {{{
   * frame #0: 0x00007fff923fadda libsystem_kernel.dylib`__pthread_kill +
 10
     frame #1: 0x00007fff924e6787 libsystem_pthread.dylib`pthread_kill + 90
     frame #2: 0x00007fff92360420 libsystem_c.dylib`abort + 129
     frame #3: 0x00007fff92327893 libsystem_c.dylib`__assert_rtn + 320
     frame #4: 0x00000001001bb566 libnpth.0.dylib`enter_npth + 53
     frame #5: 0x0000000100196284 libgpg-error.0.dylib`_gpgrt_lock_lock +
 29
     frame #6: 0x0000000100197923 libgpg-
 error.0.dylib`_gpgrt__get_std_stream + 48
     frame #7: 0x000000010002987c gpg-agent`_init_common_subsystems + 93
 }}}

 Unsurprisingly, this breaks any attempt by gpg2 to talk to the agent:

 {{{
 gpg: using pgp trust model
 gpg: no running gpg-agent - starting '/opt/local/bin/gpg-agent'
 gpg: removing stale lockfile (created by 49256)
 gpg: waiting for the agent to come up ... (5s)
 gpg: waiting for the agent to come up ... (4s)
 gpg: waiting for the agent to come up ... (3s)
 gpg: waiting for the agent to come up ... (2s)
 gpg: waiting for the agent to come up ... (1s)
 gpg: can't connect to the agent: IPC connect call failed
 gpg: no running gpg-agent - starting '/opt/local/bin/gpg-agent'
 }}}

 (etc etc)

--
Ticket URL: <https://trac.macports.org/ticket/52897>
MacPorts <https://www.macports.org/>
Ports system for macOS