lumen-fx

lumen-fx/lumen

Fast, efficient, markup based GUI framework

32 good first / help-wanted issues · Rust · last activity Aug 14, 2026

1 stars 0 forks 1 watchers Rust Mozilla Public License 2.0
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32 Open Issues Need Help Last updated: Aug 14, 2026

Open Issues Need Help

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A tooltip popup catches the pointer and closes itself 4 days ago
C-Bug D-Straightforward S-Ready good first issue A-Primitives
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
testing.md says hot reload works under --headless, but the watcher is off for a bounded run about 1 month ago
C-Docs D-Straightforward S-Needs-Triage good first issue A-Hot-Reload
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
lumen-toml.md and cli.md disagree on what lumenc package --static does with [dependencies] on Windows about 1 month ago
A-Packaging C-Docs D-Straightforward S-Needs-Triage good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
setup-lumen never fetches the runtime modules archive, so a [dependencies] app in CI boots without them about 1 month ago
A-Packaging C-Bug D-Straightforward S-Needs-Triage good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
a radio group emitted for the web is not reachable by keyboard, because every member keeps tab-index -1 about 1 month ago
A-Widgets A-Accessibility C-Bug D-Straightforward O-Web S-Needs-Design good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
a script's page() swaps in place under navigation = "hard", which is what that mode rules out about 1 month ago
A-Scripting A-Runtime C-Bug D-Straightforward O-Web S-Needs-Design good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
insert on a parsed json map resolves the list overload about 1 month ago
A-Scripting C-Bug S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
lumenc check misses body errors in host-called script functions about 1 month ago
A-Scripting C-Bug S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
candela-vm host does not contain a vm panic at any call boundary about 1 month ago
A-Scripting C-Bug D-Straightforward S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
std/audio opens an output device during plugin build with no headless suppression about 1 month ago
A-Audio C-Bug D-Straightforward S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
an <a href> mounted by the browser backend has no href, so a link after a page swap is not a link about 1 month ago
A-Runtime A-Accessibility C-Bug D-Straightforward O-Web S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
dropping a PluginSet unloads the library while a plugin's thread is still running in it about 1 month ago
A-FFI C-Bug D-Straightforward O-Windows S-Needs-Triage S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
an intentional Any return is indistinguishable from a forgotten ret() about 1 month ago
A-Scripting C-Code-Quality D-Straightforward S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
the install page does not mention runtime modules, so a [dependencies] app fails with nowhere to go about 1 month ago
C-Docs D-Straightforward S-Needs-Design S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
the candela reference repeats "Windows builds have no runtime modules yet" nine times about 1 month ago
C-Docs D-Straightforward S-Needs-Design S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
a tri-state checkbox looks unchecked on the web, because nothing projects indeterminate onto the control about 1 month ago
A-Widgets C-Bug D-Straightforward O-Web S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
the toolchain build names the std modules it compiles instead of reading them about 1 month ago
A-Packaging C-Code-Quality D-Straightforward S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
two lumen-widget tests share the global tag registry and fail each other about 3 percent of the time about 1 month ago
A-Widgets C-Bug D-Straightforward S-Needs-Triage S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
fetch-templates.sh fails the whole test job on one transient download about 1 month ago
A-Packaging C-Bug D-Straightforward S-Blocked S-Ready good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
open_path and audio_play resolve against the working directory outside hot reload about 1 month ago
A-Scripting C-Bug S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
an emitted <img> carries only src and alt, so every image shifts the layout as it loads about 1 month ago
C-Bug D-Straightforward O-Web S-Needs-Review S-Blocked good first issue A-Assets
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
the lumen.toml reference says soft navigation swaps the page in place, and nothing does about 1 month ago
A-Runtime C-Docs D-Straightforward O-Web S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
shape_cache timing test flakes on busy CI runners about 1 month ago
C-Bug S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
bidi isolation is off for every locale bundle and cannot be turned back on about 1 month ago
A-I18n C-Bug D-Straightforward S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
a component with unannotated parameters is emitted as an empty element about 1 month ago
A-Markup C-Usability D-Straightforward O-Web S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
route.segment is hardcoded empty in the web cli about 1 month ago
A-Runtime C-Bug D-Straightforward O-Web S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
writing direction follows the locale on the web and not on the desktop about 1 month ago
A-I18n C-Bug D-Straightforward O-Web S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
calling a lumen:: function that does not exist reports the namespace as invalid, not the function about 1 month ago
A-Scripting C-Usability D-Straightforward S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
a site has no way to keep a page out of a search index about 2 months ago
C-Feature D-Straightforward O-Web S-Needs-Review good first issue A-CLI
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
the fallback locale is en-US and cannot be changed about 2 months ago
A-I18n C-Usability D-Straightforward S-Needs-Review good first issue
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
sitemap.xml carries a bare <loc> per page, and lists a translated page as an unrelated url about 2 months ago
C-Usability D-Straightforward O-Web S-Needs-Review S-Blocked good first issue A-CLI
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust
jetbrains plugin for lumen with lsp 2 months ago
C-Feature D-Modest good first issue A-Devtools
lumen-fx/lumen
1

Fast, efficient, markup based GUI framework

Rust