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Merged
QuLogic merged 11 commits into from
Mar 19, 2026
Merged

Add wasm CI #29093

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89ae2e4
TST: Fix condition for test_tmpconfigdir_warning
QuLogic Jun 4, 2024
b8ff3db
Ignore threading errors when preparing font cache
QuLogic Jun 5, 2024
4ccad9c
Don't attempt to load system fonts on Emscripten
QuLogic Jun 5, 2024
e0eabd0
agg: Explicitly cast dimensions when creating Python buffer
QuLogic Sep 26, 2024
c16b5cc
wasm: Skip more subprocess & thread tests
QuLogic Nov 5, 2024
38257d9
Skip tests that expect LinAlgError on WASM
QuLogic Nov 6, 2024
702aff1
ci: Add a build for wasm
QuLogic Nov 6, 2024
3d6d450
BLD: Open symbol visibility for FreeType on wasm
QuLogic Nov 6, 2024
1af3ee7
TST: Avoid using os.devnull for path tests
QuLogic Nov 7, 2024
78a6000
Increase some tolerances for wasm
QuLogic May 16, 2025
e05db65
ci: Only build wasm for Python 3.12
QuLogic Mar 19, 2026
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Don't attempt to load system fonts on Emscripten 
The file system is either sandboxed or there are simply no other fonts,
so limit ourselves to our pre-shipped fonts.
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@QuLogic
QuLogic committed Mar 19, 2026
commit 4ccad9c74b2e935d2f66826029c3493d2e757189
3 changes: 3 additions & 0 deletions lib/matplotlib/font_manager.py
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Expand Up @@ -291,6 +291,9 @@ def findSystemFonts(fontpaths=None, fontext='ttf'):
if sys.platform == 'win32':
installed_fonts = _get_win32_installed_fonts()
fontpaths = []
elif sys.platform == 'emscripten':
installed_fonts = []
fontpaths = []
else:
installed_fonts = _get_fontconfig_fonts()
if sys.platform == 'darwin':
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2 changes: 1 addition & 1 deletion lib/matplotlib/tests/test_font_manager.py
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Expand Up @@ -21,7 +21,7 @@
from matplotlib.testing import subprocess_run_helper, subprocess_run_for_testing


has_fclist = shutil.which('fc-list') is not None
has_fclist = sys.platform != 'emscripten' and shutil.which('fc-list') is not None


def test_font_priority():
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