Your system information

• Steam client version (build number or date): 1.0.0.54-3
• Distribution (e.g. Ubuntu): Antegros - 4.15.15-1-ARCH
• Opted into Steam client beta?: No
• Have you checked for system updates?: Yes

Please describe your issue in as much detail as possible:

When Steam is launched, it gets stuck on Connecting Steam account: accountname.... Have tried multiple reinstalls, reboots, and changing system variables with no changes to behaviour.

Full terminal output:

[user@localpc ~]$ steam
/home/user/.local/share/Steam/steam.sh: line 154: VERSION_ID: unbound variable
/home/user/.local/share/Steam/steam.sh: line 154: VERSION_ID: unbound variable
Running Steam on antergos  64-bit
/home/user/.local/share/Steam/steam.sh: line 154: VERSION_ID: unbound variable
STEAM_RUNTIME is enabled automatically
Pins up-to-date!
/home/user/.local/share/Steam/steam.sh: line 874: /home/user/.local/share/Steam/ubuntu12_32/steam-runtime/run.sh: Permission denied
Installing breakpad exception handler for appid(steam)/version(1522709999)
Installing breakpad exception handler for appid(steam)/version(1522709999)
Gtk-Message: 13:44:26.385: Failed to load module "canberra-gtk-module"
Gtk-Message: 13:44:26.386: Failed to load module "canberra-gtk-module"
Installing breakpad exception handler for appid(steam)/version(1522709999)
CApplicationManagerPopulateThread took 0 milliseconds to initialize (will have waited on CAppInfoCacheReadFromDiskThread)
Installing breakpad exception handler for appid(steam)/version(1522709999)
CAppInfoCacheReadFromDiskThread took 60 milliseconds to initialize
[0406/134428.798486:ERROR:web_plugin_impl.cc(38)] Widevine registration is not supported after context initialization
[0406/134429.799967:ERROR:web_plugin_impl.cc(38)] Widevine registration is not supported after context initialization
[0406/134430.800222:ERROR:web_plugin_impl.cc(38)] Widevine registration is not supported after context initialization
[0406/134431.801278:ERROR:web_plugin_impl.cc(38)] Widevine registration is not supported after context initialization
Setting breakpad minidump AppID = 769
Steam_SetMinidumpSteamID:  Caching Steam ID:  76561197960265728 [API loaded no]
[0406/134432.804253:ERROR:web_plugin_impl.cc(38)] Widevine registration is not supported after context initialization
Generating new string page texture 2: 48x256, total string texture memory is 49.15 KB
Generating new string page texture 3: 256x256, total string texture memory is 311.30 KB
Assert( Assertion Failed: !bSharedKVSymbols ):appdatacache.cpp:2098

crash_20180406134440_18.dmp[3578]: Uploading dump (out-of-process)
/tmp/dumps/crash_20180406134440_18.dmp
crash_20180406134440_18.dmp[3578]: Finished uploading minidump (out-of-process): success = no
crash_20180406134440_18.dmp[3578]: error: libcurl.so: cannot open shared object file: No such file or directory
crash_20180406134440_18.dmp[3578]: file ''/tmp/dumps/crash_20180406134440_18.dmp'', upload no: ''libcurl.so: cannot open shared object file: No such file or directory''

Steps for reproducing this issue:

1. Launch steam via terminal.