'spack install' can now reinstall a spec even if it has dependents, via
the --overwrite option. This option moves the current installation in a
temporary directory. If the reinstallation is successful the temporary
is removed, otherwise a rollback is performed.
* r-a4: Add r dependency and update url.
* r-a4base: Add r dependency and update url.
* r-a4classif: update url and add r dependency.
* r-a4core: Update url and add r dependency.
* r-a4preproc: Update url and add r dependency.
* r-a4reporting: Update url and add r dependency.
* r-abaenrichment: Update url and add r dependency.
* r-absseq: Update url and add r dependency.
* r-acgh: Update url and add r dependency.
* r-acme: Update url and add r dependency.
* r-adsplit: Update url and add r dependency.
* r-affxparser: Update url and add r dependency.
* r-affycomp: Update url and add r dependency.
* r-affycompatible: Update url and add r dependency.
* r-affycontam: Update url and add r dependency.
* r-annaffy: Update url and add r dependency.
* r-annotate: Update url and add r dependency.
* r-annotate: Update url and add r dependency.
* r-annotationdbi: Update url and add r dependency.
* r-genefilter: Update url and add r dependency.
* r-mlinterfaces: Update url and add r dependency.
* r-limma: Update url and add r dependency.
* r-multtest: Update url and add r dependency.
* r-a4classif: Correct format.
* r-affycomp: Correct error.
- new E741 flake8 checks disallow 'l', 'O', and 'I' as variable names
- rework parts of the code that use this, to be compliant
- we could add exceptions for this, but we're trying to mostly keep up
with PEP8 and we already have more than a few exceptions.
- When you don't use wildcards, flake8 will find places where you used an
undefined name.
- This commit has all the bugfixes resulting from this static check.
There are now separate flake8 configs for core vs. packages:
- core has a smaller set of flake8 exceptions
- packages allow `from spack import *` and module globals
- Allows core to take advantage of static checking for undefined names
- Allows packages to keep using Spack tricks like `from spack import *`
and dependencies setting globals for dependents.
