Explain spack.yaml in docs

[chapman39]

Small docs PR

Fixes #106

[chapman39]

not sure if you can do a code block in a note with .rst files but i dont think i have access to readthedocs to test

[kennyweiss]

not sure if you can do a code block in a note with .rst files but i dont think i have access to readthedocs to test

I think you can create a code block within a note.

I created a build for this branch on readthedocs:

• https://uberenv.readthedocs.io/en/docs-chapman39-spack.yaml/

[chapman39]

@kennyweiss I added "(spack.yaml)" to the heading in spirit of Spack doing the same thing on this page https://spack.readthedocs.io/en/latest/environments.html, but i can remove it if that's confusing.

i am having trouble finding whether or not you can use a different name for the manifest file in the Spack documentation

[white238]

@kennyweiss I added "(spack.yaml)" to the heading in spirit of Spack doing the same thing on this page https://spack.readthedocs.io/en/latest/environments.html, but i can remove it if that's confusing.

i am having trouble finding whether or not you can use a different name for the manifest file in the Spack documentation

I have used different names than spack.yaml and it works fine. You just have to point it at it directly like this:

spack env create test1 toss3.yaml

[chapman39]

I have used different names than spack.yaml and it works fine.

sounds good ill include that in the docs then