[WIP] Enable federated learning

[hcho3]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)

[hcho3]

@conda-forge-admin, please rerender

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe:

• It looks like the 'libxgboost' output doesn't have any tests.
• It looks like the '_py-xgboost-mutex' output doesn't have any tests.
• It looks like the 'py-xgboost-cpu' output doesn't have any tests.
• It looks like the 'py-xgboost-gpu' output doesn't have any tests.
• It looks like the 'xgboost' output doesn't have any tests.
• It looks like the '_r-xgboost-mutex' output doesn't have any tests.
• It looks like the 'r-xgboost-cpu' output doesn't have any tests.
• It looks like the 'r-xgboost-gpu' output doesn't have any tests.

[hcho3]

@conda-forge-admin, please rerender

[hcho3]

@conda-forge-admin, please rerender

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipe) and found some lint.

Here's what I've got...

For recipe:

• Selectors are suggested to take a <two spaces>#<one space>[<expression>] form. See lines [23]

For recipe:

• It looks like the 'libxgboost' output doesn't have any tests.
• It looks like the '_py-xgboost-mutex' output doesn't have any tests.
• It looks like the 'py-xgboost-cpu' output doesn't have any tests.
• It looks like the 'py-xgboost-gpu' output doesn't have any tests.
• It looks like the 'xgboost' output doesn't have any tests.
• It looks like the '_r-xgboost-mutex' output doesn't have any tests.
• It looks like the 'r-xgboost-cpu' output doesn't have any tests.
• It looks like the 'r-xgboost-gpu' output doesn't have any tests.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe:

• It looks like the 'libxgboost' output doesn't have any tests.
• It looks like the '_py-xgboost-mutex' output doesn't have any tests.
• It looks like the 'py-xgboost-cpu' output doesn't have any tests.
• It looks like the 'py-xgboost-gpu' output doesn't have any tests.
• It looks like the 'xgboost' output doesn't have any tests.
• It looks like the '_r-xgboost-mutex' output doesn't have any tests.
• It looks like the 'r-xgboost-cpu' output doesn't have any tests.
• It looks like the 'r-xgboost-gpu' output doesn't have any tests.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipe) and found some lint.

Here's what I've got...

For recipe:

• requirements: host: m2-zlib=1.2 must contain a space between the name and the pin, i.e. m2-zlib =1.2
• requirements: host: m2-zlib=1.2 must contain a space between the name and the pin, i.e. m2-zlib =1.2

For recipe:

• It looks like the 'libxgboost' output doesn't have any tests.
• It looks like the '_py-xgboost-mutex' output doesn't have any tests.
• It looks like the 'py-xgboost-cpu' output doesn't have any tests.
• It looks like the 'py-xgboost-gpu' output doesn't have any tests.
• It looks like the 'xgboost' output doesn't have any tests.
• It looks like the '_r-xgboost-mutex' output doesn't have any tests.
• It looks like the 'r-xgboost-cpu' output doesn't have any tests.
• It looks like the 'r-xgboost-gpu' output doesn't have any tests.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe:

• It looks like the 'libxgboost' output doesn't have any tests.
• It looks like the '_py-xgboost-mutex' output doesn't have any tests.
• It looks like the 'py-xgboost-cpu' output doesn't have any tests.
• It looks like the 'py-xgboost-gpu' output doesn't have any tests.
• It looks like the 'xgboost' output doesn't have any tests.
• It looks like the '_r-xgboost-mutex' output doesn't have any tests.
• It looks like the 'r-xgboost-cpu' output doesn't have any tests.
• It looks like the 'r-xgboost-gpu' output doesn't have any tests.