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Better Error message if no backend installed #1042 #1045

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Merged
merged 8 commits into from
Jun 13, 2023
Merged

Better Error message if no backend installed #1042 #1045

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4da8305
Better Error message if no backend installed #1042
geckguy Jun 12, 2023
70b908a
change the error message as requested
geckguy Jun 12, 2023
3efd27f
Update src/py/reactpy/reactpy/backend/default.py
geckguy Jun 12, 2023
6029596
fix linting issues
geckguy Jun 12, 2023
9028c58
Update src/py/reactpy/reactpy/backend/default.py
geckguy Jun 12, 2023
6570a61
Improve readability
geckguy Jun 12, 2023
1542508
Update src/py/reactpy/reactpy/backend/default.py
rmorshea Jun 12, 2023
f25dc26
make text bold
geckguy Jun 13, 2023
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9 changes: 7 additions & 2 deletions src/py/reactpy/reactpy/backend/default.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,7 @@
from typing import Any, NoReturn

from reactpy.backend.types import BackendImplementation
from reactpy.backend.utils import all_implementations
from reactpy.backend.utils import SUPPORTED_PACKAGES, all_implementations
from reactpy.types import RootComponentConstructor

logger = getLogger(__name__)
Expand Down Expand Up @@ -59,7 +59,12 @@ def _default_implementation() -> BackendImplementation[Any]:
implementation = next(all_implementations())
except StopIteration: # nocov
logger.debug("Backend implementation import failed", exc_info=exc_info())
msg = "No built-in server implementation installed."
supported_backends = ", ".join(SUPPORTED_PACKAGES)
msg = ("It seems you haven't installed a backend. To resolve this issue, "
"you can install a backend by running:\n\n"
'pip install "reactpy[starlette]"\n\n'
f"Other supported backends include: {supported_backends}.")

raise RuntimeError(msg) from None
else:
_DEFAULT_IMPLEMENTATION = implementation
Expand Down