So far the ordering of alias packages with the same name was undefined
so the actual order was determined by implementation of the sorting
algorithm in PHP. As of PHP8 sort is stable by default which changes the
outcome in some of our test cases.
With the fully defined total order the order can longer change depending
on sorting algorithm used and remains the same across PHP versions.
The only type of request job remaining was "install" which is really a
root requirement. The only other kind of input for the solver is now a
set of fixed packages.
Rules have been updated to account for only two kinds of former job
reason: FIXED or ROOT_REQUIRE. The job property has always been
redundant and has been removed, since reasonData suffices.
Problem reasons are always rules, so the unnecessary wrapping in an
array has been removed.
We now only ever generate a single rule per root require or fixed
package, so there is no need for the solver to special handle disabling
"jobs" anymore, the rule can just be disabled as usual.
For consistency special handling of rules for jobs in problems has been
integrated into the rule class like all other rule reasons. As part of
this change the error message for root requirements has been improved a
bit to make it clearer where the package installation request came from.
The word job has also been removed from operations, which are called
operations, not jobs.
The solver now only calculates a lock file transaction which does not
need to be sorted in order of dependencies. This is only necessary for
the local repo transaction generated without the solver during install
* github-composer/2.0: (48 commits)
Fix missing use/undefined var
Split up steps on VCS downloaders to allow doing network operations before touching the filesystem on GitDownloader, fixes#7903
Fix use statement
Deduplicate findHeaderValue code
Add install-path to the installed.json for every package, fixes#2174, closes#2424
Remove unnecessary config from phpstan
Make sure the directory exists and will not block installation later when downloading
Avoid wiping the whole target package if download of the new one fails, refs #7929
Only empty dir before actually installing packages, fixes#7929
Improve output when installing packages
Show best possible version in diagnose command
Remove extra arg
Allow path repos to point to their own source dir as install target, resulting in noop, fixes#8254
Fix use of decodeJson
Fix update mirrors to also update transport-options, fixes#7672
Fix updating or URLs to include dist type and shasum, fixes#8216
Fix origin computation
Improve handling of non-standard ports for GitLab and GitHub installs, fixes#8173
Load packages from the lock file for check-platform-reqs if no dependencies have been installed yet, fixes#8058
Fix error_handler return type declaration
...
* 2.0: (101 commits)
SVN: hide passwords for debug output
Free $solver asap
fixes#8179
[minor] Fixed a typo in the CHANGELOG.md.
Update deps
Update changelog
Revert "Allow overriding self-update target file with envvar COMPOSER_SELF_UPDATE_TARGET" Revert "Add docs for COMPOSER_SELF_UPDATE_TARGET, refs #8151"
Add docs for COMPOSER_SELF_UPDATE_TARGET, refs #8151
Fix display of HHVM warning appearing when HHVM is not in use, fixes#8138
Read classmap-authoritative and apcu-autoloader from project config when installing via create-project, fixes#8155
Use possessive quantifiers
Update xdebug-handler to 1.3.3
fixes#8159
Allow overriding self-update target file with envvar COMPOSER_SELF_UPDATE_TARGET
flag should come before script name
use full command name, not abbreviated/alias
modify text
Document the alternatives to disable the default script timeout
Anchor pattern
Fix URL resolution for Composer repositories
...
- Introduce separate Lock and LocalRepo transactions, one for changes
to the lock file, one for changes to locally installed packages based
on lock file
- Remove various hacks to keep dev dependencies updated and
incorporated the functionality into the transaction classes
- Remove installed repo, there are now local repo, locked repo and
platform repo
- Remove access to local repo from solver, only supply locked packages
- Update can now be run to modify the lock file but not install packages
to local repo
* master:
Follow up to #7946 test: add solver flag to assert path execution
Fix tests
Make sure config command output is also output on --quiet so that warnings can be hidden, fixes#7963
Recognize composer-plugin-api as a platform package, fixes#7951
Quote wildcards to avoid issues in some shells, fixes#7960
Avoid dumping null values for dist reference/shasum and source reference, fixes#7955
Soften hard exit after revert of composer file
Make unixy proxy code POSIX compatible
Update aliases.md
Same but for Problem.php
Better error message for present but incompatible versions
Fix inconsistent casing
Don't do (new Foo())->bar() - not 5.3-compatible
Support identifying the HHVM version when not running with HHVM
* master:
Fix solver problem exceptions with unexpected contradictory "Conclusions"
Also load config into IO if not freshly created
Only load configuration into IO if IO is available
Fix defaultRepos fallback does not use auth config
Add warning/info msg when tweaking disable-tls setting to avoid confusion, fixes#7935
This 5 character fix comes with a solver test as well as a functional
installer test essentially verifying the same thing. The solver test is
more useful when working on the solver. But the functional test is less
likely to be accidentally modified incorrectly during refactoring, as
every single package, version and link in the rather complex test
scenario is essential, and a modified version of the test may very well
still result in a successful installation but no longer verify the bug
described below.
Background:
In commit 451bab1c2c from May 19, 2012 I
refactored literals from complex objects into pure integers to reduce
memory consumption. The absolute value of an integer literal is the id
of the package it refers to in the package pool. The sign indicates
whether the package should be installed (positive) or removed (negative),
So a major part of the refactoring was swapping this call:
$literal->getPackageId()
For this:
abs($literal)
Unintentionally in line 554/523 I incorrectly applied this change to the
line:
$this->literalFromId(-$literal->getPackageId());
It was converted to:
-abs($literal);
The function literalFromId used to create a new literal object. By using
the abs() function this change essentially forces the resulting literal
to be negative, while the minus sign previously inverted the literal, so
positive into negative and vice versa.
This particular line is in a function meant to analyze a conflicting
decision during dependency resolution and to draw a conclusion from it,
then revert the state of the solver to an earlier position, and attempt
to solve the rest of the rules again with this new "learned" conclusion.
Because of this bug these conclusions could only ever occur in the
negative, e.g. "don't install package X". This is by far the most likely
scenario when the solver reaches this particular line, but there are
exceptions.
If you experienced a solver problem description that contained a
statement like "Conclusion: don't install vendor/package 1.2.3" which
directly contradicted other statements listed as part of the problem,
this could likely have been the cause.
Pool construction depends on the install request now, so only required
packages get loaded, add some structure for future asynchronously
loading composer repositories
Breaking change for the plugin interface so bumping the version of
composer-plugin-api to 2.0.0
First step for a refactoring of the package metadata loading mechanism
It is known that composer update takes a lot of memory: #5915, #5902,
I am playing with a profiler (@blackfireio) to make a demo in my local
PHP meetup (@phpvigo) and I found out a way to use less memory. These
are my first tests:
* Private project using PHP 5.6:
* Memory: from 1.31GB to 1.07GB
* Wall Time: from 2min 8s to 1min 33s
* symfony-demo using PHP 7.1 in my old mac book:
* Memory: from 667MB to 523MB
* Wall Time: from 5min 29s to 5min 28s
Not use an array inside conflict rules is this improvement main idea:
```php
<?php
//Memory 38MB
gc_collect_cycles();
gc_disable();
class Rule
{
public $literals;
public function __construct(array $literals)
{
$this->literals = $literals;
}
}
$rules = array();
$i = 0;
while ($i<80000){ //
$i++;
$array = array(-$i, $i);
$rule = new Rule($array);
$rules[] = $rule;
}
```
```php
<?php
//Memory 11.1MB
gc_collect_cycles();
gc_disable();
class Rule2Literals
{
public $literal1;
public $literal2;
public function __construct($literal1, $literal2)
{
$this->literal1 = $literal1;
$this->literal2 = $literal2;
}
}
$rules = array();
$i = 0;
while ($i<80000){ //
$i++;
$rule = new ConflictRule(-$i, $i);
$rules[] = $rule;
}
```
More info https://github.com/composer/composer/pull/6168
Nils Adermann