* Remove CI jobs related to Python 2.7
* Remove Python 2.7 specific code from Spack core
* Remove externals for Python 2 only
* Remove llnl.util.compat
Fixup common tests
* Remove requirement for Python 2.6
* Skip new failing test
Windows: Update url util to handle Windows paths (#27959)
* update url util to handle windows paths
* Update tests to handle fixed url handling
* canonicalize path only when the path type matches the host platform
* Skip some url tests on Windows
Co-authored-by: Omar Padron <omar.padron@kitware.com>
Use threading.TIMEOUT_MAX when available (#24246)
This value was introduced in Python 3.2. Specifying a timeout greater than
this value will raise an OverflowError.
Co-authored-by: Lou Lawrence <lou.lawrence@kitware.com>
Co-authored-by: John Parent <john.parent@kitware.com>
Co-authored-by: Betsy McPhail <betsy.mcphail@kitware.com>
To provide Windows-compatible functionality, spack code should use
llnl.util.symlink instead of os.symlink. On non-Windows platforms
and on Windows where supported, os.symlink will still be used.
Use junctions when symlinks aren't supported on Windows (#22583)
Support islink for junctions (#24182)
Windows: Update llnl/util/filesystem
* Use '/' as path separator on Windows.
* Recognizing that Windows paths start with '<Letter>:/' instead of '/'
Co-authored-by: lou.lawrence@kitware.com <lou.lawrence@kitware.com>
Co-authored-by: John Parent <john.parent@kitware.com>
Backport operator precedence algorithm from here:
397b96f6d7
This eliminates unnecessary parentheses from our unparsed output and makes Spack's unparser
consistent with the one in upstream Python 3.9+, with one exception.
Our parser normalizes argument order when `py_ver_consistent` is set, so that star arguments
in function calls come last. We have to do this because Python 2's AST doesn't have information
about their actual order.
If we ever support only Python 3.9 and higher, we can easily switch over to `ast.unparse`, as
the unparsing is consistent except for this detail (modulo future changes to `ast.unparse`)
Previously, there were differences in the unparsed code for Python 2.7 and for 3.5-3.10.
This makes unparsed code the same across these Python versions by:
1. Ensuring there are no spaces between unary operators and
their operands.
2. Ensuring that *args and **kwargs are always the last arguments,
regardless of the python version.
3. Always unparsing print as a function.
4. Not putting an extra comma after Python 2 class definitions.
Without these changes, the same source can generate different code for different
Python versions, depending on subtle AST differences.
One place where single source will generate an inconsistent AST is with
multi-argument print statements, e.g.:
```
print("foo", "bar", "baz")
```
In Python 2, this prints a tuple; in Python 3, it is the print function with
multiple arguments. Use `from __future__ import print_function` to avoid
this inconsistency.
Add `astunparse` as `spack_astunparse`. This library unparses Python ASTs and we're
adding it under our own name so that we can make modifications to it.
Ultimately this will be used to make `package_hash` consistent across Python versions.
Our `jsonschema` external won't support Python 3.10, so we need to upgrade it.
It currently generates this warning:
lib/spack/external/jsonschema/compat.py:6: DeprecationWarning: Using or importing the ABCs
from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and
in 3.10 it will stop working
This upgrades `jsonschema` to 3.2.0, the latest version with support for Python 2.7. The next
version after this (4.0.0) drops support for 2.7 and 3.6, so we'll have to wait to upgrade to it.
Dependencies have been added in prior commits.
Modifications:
- [x] Removed `centos:6` unit test, adjusted vermin checks
- [x] Removed backport of `collections.OrderedDict`
- [x] Removed backport of `functools.total_ordering`
- [x] Removed Python 2.6 specific skip markers in unit tests
- [x] Fixed a few minor Python 2.6 related TODOs in code
Updating the vendored dependencies will be done in separate PRs
Currently Spack vendors `pytest` at a version which is three major
versions behind the latest (3.2.5 vs. 6.2.4). We do that since v3.2.5
is the latest version supporting Python 2.6. Remaining so much
behind the currently supported versions though might introduce
some incompatibilities and is surely a technical debt.
This PR modifies Spack to:
- Use the vendored `pytest@3.2.5` only as a fallback solution,
if the Python interpreter used for Spack doesn't provide a newer one
- Be able to parse `pytest --collect-only` in all the different output
formats from v3.2.5 to v6.2.4 and use it consistently for `spack unit-test --list-*`
- Updating the unit tests in Github Actions to use a more recent `pytest` version
This type of error is skipped:
make[1]: *** [Makefile:222: /tmp/user/spack-stage/.../spack-src/usr/lib/julia/libopenblas64_.so.so] Error 1
but it's useful to have it, especially when a package sets a variable
incorrectly in makefiles
TL;DR: there are matching groups trying to match 1 or more occurrences of
something. We don't use the matching group. Therefore it's sufficient to test
for 1 occurrence. This reduce quadratic complexity to linear time.
---
When parsing logs of an mpich build, I'm getting a 4 minute (!!) wait
with 16 threads for regexes to run:
```
In [1]: %time p.parse("mpich.log")
Wall time: 4min 14s
```
That's really unacceptably slow...
After some digging, it seems a few regexes tend to have `O(n^2)` scaling
where `n` is the string / log line length. I don't think they *necessarily*
should scale like that, but it seems that way. The common pattern is this
```
([^:]+): error
```
which matches `: error` literally, and then one or more non-colons before that. So
for a log line like this:
```
abcdefghijklmnopqrstuvwxyz: error etc etc
```
Any of these are potential group matches when using `search` in Python:
```
abcdefghijklmnopqrstuvwxyz
bcdefghijklmnopqrstuvwxyz
cdefghijklmnopqrstuvwxyz
⋮
yz
z
```
but clearly the capture group should return the longest match.
My hypothesis is that Python has a very bad implementation of `search`
that somehow considers all of these, even though it can be implemented
in linear time by scanning for `: error` first, and then greedily expanding
the longest possible `[^:]+` match to the left. If Python indeed considers
all possible matches, then with `n` matches of length `1 .. n` you
see the `O(n^2)` slowness (i verified this by replacing + with {1,k}
and doubling `k`, it doubles the execution time indeed).
This PR fixes this by removing the `+`, so effectively changing the
O(n^2) into a O(n) worst case.
The reason we are fine with dropping `+` is that we don't use the
capture group anywhere, so, we just ensure `:: error` is not a match
but `x: error` is.
After going from O(n^2) to O(n), the 15MB mpich build log is parsed
in `1.288s`, so about 200x faster.
Just to be sure I've also updated `^CMake Error.*:` to `^CMake Error`,
so that it does not match with all the possible `:`'s in the line.
Another option is to use `.*?` there to make it quit scanning as soon as
possible, but what line that starts with `CMake Error` that does not have
a colon is really a false positive...
* Use gnuconfig package for config file replacement for RISC-V.
This extends the changes in #26035 to handle RISC-V. Before this change,
many packages fail to configure on riscv64 due to config.guess being too
old to know about RISC-V. This is seen out of the box when clingo fails
to build from source due to pkgconfig failing to configure, throwing
error: "configure: error: cannot guess build type; you must specify one".
* Add riscv64 architecture
* Update vendored archspec from upstream project.
These archspec updates include changes needed to support riscv64.
* Update archspec's __init__.py to reflect the commit hash of archspec being used.
- Match failed autotest tests show the word "FAILED" near the end
- Match "FAIL: ", "FATAL: ", "failed ", "Failed test" of other suites
- autotest " ok"$ means the test passed, independend of text before.
- autoconf messages showing missing tools are fatal later, show them.
Spack is internally using a patched version of `argparse` mainly to backport Python 3 functionality
into Python 2. This PR makes it such that for the supported Python 3 versions we use `argparse`
from the standard Python library. This PR has been extracted from #25371 where it was needed
to be able to use recent versions of `pytest`.
* Fixed formatting issues when using a pristine argparse.py
* Fix error message for Python 3.X when missing positional arguments
* Account for the change of API in Python 3.7
* Layout multi-valued args into columns in error messages
* Seamless transition in develop if argparse.pyc is in external
* Be more defensive in case we can't remove the file.
