* Reduce the calls to the python interpreter during initialization
This should reduce the delay the users experience when sourcing the
setup file to activate shell support. It works by generating at once
all the commands that needs to evaluated (they are stored in
a string and later `eval`ed by the shell).
* setup_env.sh: changed `read` with an equivalent magic
For some reason `read` breaks when sourced from a running script.
Change the incantation we use to construct the unique python command
that will be evaluated.
* setup_env.sh: python command now constructed with `printf` for portability
This recovers the support for `zsh` that was broken in previous commits.
* py-petsc4py: Update version to 3.8.0 and add dependencies
- Added explicit dependency on python and numpy
* Kept old version - and corrected minimal python version
* Update to 3.8.1
- Previously variant values had to be a tuple or a callable predicate.
- This allows 'any' as shorthand for `lambda x: True` and type objects
as shorthand for "any value of this type".
- Makes variant definitions more readable, keeps lambdas out of
packages for common cases.
* First draft for SC17 build systems portion
Added tutorial_buildsystems.rst file as well as example files under
the tutorial/ directory.
* Remove floating `
* Add requested changes, and examples of subclasses
Added in the requested changes to the documentation. Also added in
information about the subclasses and the defaults that they provide.
Also fixed some phrasing issues, formatting and punctuation.
* Flake8 fixes and new files for classes
Made flake8 fixes to pass tests and also added files to demonstrate code
in the classes.
* Minor edits
Edits in formatting and made some sentence changes
* Flake8 fixes
More flake8 fixes
* Flake8 fix
* Change section order on tutorial and minor edits
Placed the section at the appropriate section for the tutorial and then
added some minor edits that were requested.
* Add requested changes and more details
Added more details to Cmake, Makefile and Python Packages.
* Fixed formatting and minor edits
* Fix doc build error
