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  • simonw · 5 ✖

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  • Datasette Plugins · 5 ✖

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id html_url issue_url node_id user created_at updated_at ▲ author_association body reactions issue performed_via_github_app
381621338 https://github.com/simonw/datasette/issues/14#issuecomment-381621338 https://api.github.com/repos/simonw/datasette/issues/14 MDEyOklzc3VlQ29tbWVudDM4MTYyMTMzOA== simonw 9599 2018-04-16T14:36:27Z 2018-04-16T14:36:27Z OWNER

Annoyingly, the following only results in the last of the two prepare_connection hooks being registered:

``` from datasette import hookimpl import pint import random

ureg = pint.UnitRegistry()

@hookimpl def prepare_connection(conn): def convert_units(amount, from_, to_): "select convert_units(100, 'm', 'ft');" return (amount * ureg(from_)).to(to_).to_tuple()[0] conn.create_function('convert_units', 3, convert_units)

@hookimpl def prepare_connection(conn): conn.create_function('random_integer', 2, random.randint) ```

 
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 Datasette Plugins 267707940  
381611738 https://github.com/simonw/datasette/issues/14#issuecomment-381611738 https://api.github.com/repos/simonw/datasette/issues/14 MDEyOklzc3VlQ29tbWVudDM4MTYxMTczOA== simonw 9599 2018-04-16T14:07:30Z 2018-04-16T14:07:30Z OWNER

I should check if it's possible to have two template registration function plugins in a single plugin module. If it isn't maybe I should use class plugins instead of module plugins.

 
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 Datasette Plugins 267707940  
381446392 https://github.com/simonw/datasette/issues/14#issuecomment-381446392 https://api.github.com/repos/simonw/datasette/issues/14 MDEyOklzc3VlQ29tbWVudDM4MTQ0NjM5Mg== simonw 9599 2018-04-15T23:22:40Z 2018-04-16T05:25:57Z OWNER

OK, from that prototype in f2720b0c6b7172ebe8820 it looks like pluggy provides a solid path forward.

Next steps:

  • [x] Build a demo plugin that uses setuptools entrypoints to register with the datasette plugin manager via pluggy
  • [x] Figure out a mechanism for registering plugins without first needing to publish them to PyPI. Can I load plugins from a special plugins/ directory similar to the --template-dir=templates/ option already supported by Datasette? #211
 
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 Datasette Plugins 267707940  
381450591 https://github.com/simonw/datasette/issues/14#issuecomment-381450591 https://api.github.com/repos/simonw/datasette/issues/14 MDEyOklzc3VlQ29tbWVudDM4MTQ1MDU5MQ== simonw 9599 2018-04-16T00:30:22Z 2018-04-16T00:34:42Z OWNER

Slight code design problem... when I tried installing my branch in a fresh virtual environment I got this error, because setup.py now depends on pluggy (from importing __version__):

File "/private/var/folders/jj/fngnv0810tn2lt_kd3911pdc0000gp/T/pip-req-build-dftqdezt/setup.py", line 2, in <module> from datasette import __version__ File "/private/var/folders/jj/fngnv0810tn2lt_kd3911pdc0000gp/T/pip-req-build-dftqdezt/datasette/__init__.py", line 2, in <module> from .hookspecs import hookimpl # noqa File "/private/var/folders/jj/fngnv0810tn2lt_kd3911pdc0000gp/T/pip-req-build-dftqdezt/datasette/hookspecs.py", line 1, in <module> from pluggy import HookimplMarker ModuleNotFoundError: No module named 'pluggy'

Looks like I've run into point 6 on https://packaging.python.org/guides/single-sourcing-package-version/ :

 
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 Datasette Plugins 267707940  
381450394 https://github.com/simonw/datasette/issues/14#issuecomment-381450394 https://api.github.com/repos/simonw/datasette/issues/14 MDEyOklzc3VlQ29tbWVudDM4MTQ1MDM5NA== simonw 9599 2018-04-16T00:27:23Z 2018-04-16T00:27:23Z OWNER

I created https://github.com/simonw/datasette-plugin-demos which is now published to PyPI and can be installed with pip install datasette-plugin-demos - I've confirmed that if you DO install it my Datasette plugins branch picks up the plugins, and select random_integer(1, 4) works as it should.

 
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 Datasette Plugins 267707940  

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