NachtsternBuild/fastboot-assistant

[BUG] [Snap] Problems with GTK/libadwaita themes

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#128 opened on Jun 20, 2025

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Priority: lowbughelp wantedsecurity

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Description

$ LIBGL_DEBUG=verbose snap run fastboot-assistant &

[2025-06-20 10:09:49] [INFO]: Logging started.
[2025-06-20 10:09:49] [INFO]: Log closed.
[2025-06-20 10:09:49] [INFO]: start fastboot-assistant

/snap/fastboot-assistant/6/gnome-platform/usr/lib/x86_64-linux-gnu/gtk-4.0/4.0.0/media/libmedia-gstreamer.so: undefined symbol: gdk_cicp_params_set_matrix_coefficients
Failed to load module: /snap/fastboot-assistant/6/gnome-platform/usr/lib/x86_64-linux-gnu/gtk-4.0/4.0.0/media/libmedia-gstreamer.so
[2025-06-20 10:09:49] [INFO]: activate_fastboot_assistant
[2025-06-20 10:09:49] [INFO]: Check for auto theme file.
[2025-06-20 10:09:49] [INFO]: Check for adw_css file
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:1:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:11:38-39: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:14:28-34: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:15:33-39: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:16:29-35: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:17:29-35: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:18:27-33: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:27:43-44: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:28:50-51: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:32:41-42: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:33:42-43: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:37:51-52: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:38:52-53: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:39:37-40: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:41:38-39: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.169: Theme parser error: defaults-dark-yaru-default.css:46:41-42: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:49:33-34: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:50:45-46: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:51:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:53:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:103:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:114:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:119:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:122:39-49: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: defaults-dark-yaru-default.css:123:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:1:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:48:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:50:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:52:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:54:1-6: Unknown name of pseudo-class
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:56:22-26: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:56:64-68: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:58:14-18: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:66:29-32: Percentages are not allowed here
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:68:363-380: No property named "--accent-bg-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:68:406-423: No property named "--accent-fg-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:68:443-468: No property named "--scrollbar-outline-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:68:488-512: No property named "--standalone-color-oklab"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.170: Theme parser error: base-yaru.css:68:532-546: No property named "--accent-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:68:614-633: No property named "--destructive-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:68:706-721: No property named "--success-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:68:790-805: No property named "--warning-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:68:874-887: No property named "--error-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:68:969-972: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:68:1021-1022: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:71:31-41: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:73:44-54: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:75:76-80: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:75:128-132: Junk at end of value for box-shadow
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:75:165-169: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:80:47-48: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:80:68-69: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:80:90-91: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:80:113-114: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:83:55-56: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:83:77-78: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:83:98-99: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:83:120-121: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:83:143-144: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:85:86-90: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:86:57-61: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:88:231-235: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:126:48-52: Expected a number
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:128:56-57: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:128:87-88: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.171: Theme parser error: base-yaru.css:128:118-119: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:128:143-144: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:130:73-83: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:132:66-69: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:132:100-103: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:132:133-136: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:138:76-86: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:140:59-69: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:140:59-69: Junk at end of value for background
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:142:119-129: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:142:119-129: Junk at end of value for background
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:148:78-81: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:148:111-114: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:150:78-81: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:150:111-114: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:152:89-92: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:154:57-67: Junk at end of value for box-shadow
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.172: Theme parser error: base-yaru.css:170:821-831: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.173: Theme parser error: base-yaru.css:172:6291-6301: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.173: Theme parser error: base-yaru.css:174:6574-6584: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.173: Theme parser error: base-yaru.css:176:13863-13873: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.173: Theme parser error: base-yaru.css:178:6672-6682: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.174: Theme parser error: base-yaru.css:180:6624-6634: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.174: Theme parser error: base-yaru.css:182:13933-13943: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.174: Theme parser error: base-yaru.css:184:1077-1081: Expected a number
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:204:5464-5468: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:204:5516-5520: Junk at end of value for box-shadow
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:206:89-92: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:206:127-128: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:210:94-104: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:212:83-93: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:214:162-172: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:216:73-83: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:218:85-95: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:220:180-190: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:226:1607-1617: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:228:1392-1402: Expected a valid color.
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:230:3004-3005: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.175: Theme parser error: base-yaru.css:232:1430-1431: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.176: Theme parser error: base-yaru.css:234:1526-1527: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.176: Theme parser error: base-yaru.css:236:3260-3261: Unexpected data at end of RGB() argument
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.176: Theme parser error: base-yaru.css:238:693-710: No property named "--accent-bg-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.176: Theme parser error: base-yaru.css:238:741-758: No property named "--accent-fg-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.176: Theme parser error: base-yaru.css:238:789-803: No property named "--accent-color"
(fastboot-assistant:27285): Gtk-WARNING **: 10:09:49.176: Theme parser error: base-yaru.css:238:838-842: Expected a valid color.


 _Originally posted by @igorpupkinable in [#98](https://github.com/NachtsternBuild/fastboot-assistant/issues/98#issuecomment-2990117249)_

Contributor guide

Research direction
Investigate the snap packaging to ensure GTK themes are correctly bundled and accessible. Check if the theme files (Yaru) are compatible with the snap's GTK runtime version. Look for version mismatches between the snap's GTK libraries and the theme files.
Tech stack
ccss
Domain
desktop
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Git
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
75