Add adsDriver and autoparamDriver

[Synthetica9]

Add adsDriver (https://epics.cosylab.com/documentation/adsDriver/) and autoParamDriver (dependency, https://epics.cosylab.com/documentation/autoparamDriver)

I'm not sure what is meant with the mandatory varname attribute (fairly new to EPICS) so I'm not sure if I got those correct, would like review on that.

Added myself as maintainer for these two.

[Synthetica9]

Note that this is a different library from #45

[minijackson]

Amazing, thanks a lot!

To answer your question about varname, it has to do with how EPICS resolves dependencies. For example, in the case adsDriver, to tell EPICS where autoparamDriver is, you put a line in configure/RELEASE:

AUTOPARAM=/path/to/autoparamdriver

varname is the name of the variable. The only technical constraint I know is that it must be unique per package.

Changes looks good, I only have minor comments. Could you split your changes into 2 commits, and run nix fmt? I also like to keep varname near pname and version.

Thanks again!

[minijackson]

Oh, another question: do you think it would be possible to have an automated test for these packages?

[agaget]

Oh, another question: do you think it would be possible to have an automated test for these packages?

And to do that if you want to dive in, @minijackson find this python lib if you need : https://pyads.readthedocs.io/en/latest/documentation/testserver.html

And example of ioc tests are here : https://github.com/epics-extensions/EPNix/tree/master/ioc/tests/support

I know that because I am supposed to do so for the other ADS driver :)

[Synthetica9]

Could you split your changes into 2 commits, and run nix fmt?

History should be clean now

I also like to keep varname near pname and version.

Changed this as well

Oh, another question: do you think it would be possible to have an automated test for these packages?

While I really like the NixOS test driver (did quite a bit of work on it back in the day), I can't really justify this to my employer atm, so don't expect this in the short run.

[minijackson]

Looks good, thanks!

[Synthetica9]

Hmm the driver uses sum reads, and the testServer doesn't seem to support this, so this requires upstream additions to the test server.

(EDIT: talking about the NixOS test for this component)