1. 17 May, 2024 15 commits
    • Xavier Thompson's avatar
      [feat] Use pip wheel + Wheel.install_as_egg · b08cf932
      Xavier Thompson authored
      `pip install <package>` produces a `<package-name>` package folder
      and a `<package-name>.dist-info` metadata folder, which is another
      format than eggs. Then buildout bundles both folders into a parent
      folder `<package.egg>` and tries to act as though it were an egg.
      
      Instead, use `pip wheel` to produce a wheel - which `pip install`
      does internally anyway - and `setuptools.Wheel.install_as_egg` to
      produce a genuine egg.
      
      This is much cleaner: it consistently produces genuine eggs instead
      of sometimes true eggs, sometimes `.dist-info` bundles depending on
      whether `pip install` is called or the package was installed from a
      `.whl` or `.egg` archive directly.
      
      The only downside it this requires setuptools >= 38.2.3.
      b08cf932
    • Xavier Thompson's avatar
      [fix] Add each .egg and .dist-info to environment · 58b8ec8d
      Xavier Thompson authored
      Since zc.buildout uses `pip` to install dists, most .egg in ./eggs and
      ./develop-eggs (in case of dists installed with zc.recipe.egg:custom)
      are not actually eggs, but installed wheels with .dist-info format
      which have been bundled into a .egg containing .dist-info metadata
      folder as well as the actual package folder directly alongside.
      
      Unlike actual eggs, such */*.dist-info bundles are not stepped into
      by package_resources when the containing directory is add to the
      environment, so each .egg bundle needs to be added individually.
      
      Buildout already does this for bundles in the target directory of
      egg installation, usually ./eggs, but e.g. in offline mode there
      is no target directory and then already installed .egg bundles
      are not detected.
      
      So now every dist path is added to the environment individual,
      including for paths where buildout looks for already installed
      eggs but will not install eggs to, such as ./develop-eggs, and
      also ./eggs in offline mode or when using zc.recipe.egg:custom
      and the target is ./develop-eggs and ./eggs is such a scan-from
      but don't-install-to path.
      58b8ec8d
    • Xavier Thompson's avatar
      bfedbc34
    • Xavier Thompson's avatar
      9f45ce37
    • Julien Muchembled's avatar
      [feat] Omit Python library in script paths · 134008a5
      Julien Muchembled authored
      This is useful when using OS Python & eggs.
      
      Useless for SlapOS.
      134008a5
    • Xavier Thompson's avatar
      77ca6153
    • Xavier Thompson's avatar
      [doc] Show getting-started with modern python venv · 19f6addd
      Xavier Thompson authored
      Also show `pip install <url-for-tar.gz-of-master-branch-on-gitlab>`.
      19f6addd
    • Xavier Thompson's avatar
      [fix] Allow only installable DEVELOP_DIST in index · 85619ff1
      Xavier Thompson authored
      The package index considers may yield develop dists found on its local
      search_path - sys.path by default - in addition to its index_url.
      
      This commit discards such dists when they do not contain a setup.py
      nor a pyproject.toml, as a good heuristic of whether they will be
      installable or not.
      85619ff1
    • Xavier Thompson's avatar
      [fix] Fix package index selection indexing · 07a270fd
      Xavier Thompson authored
      Index constructed package indexes by all their parameters.
      07a270fd
    • Xavier Thompson's avatar
      [feat] Add buildout:extra-paths option · 1f3977f8
      Xavier Thompson authored
      This option determines what paths zc.buildout will scan for already
      installed distributions. It can be set to an empty value to enable
      isolation. The special values 'sys.path', 'legacy' and 'zc.buildout'
      expand to particular paths. The default is 'zc.buildout'.
      
      The 'sys.path' mode simply expands to the currrent sys.path.
      
      The 'legacy' mode reproduces the previous behavior of specifically
      scanning the paths of the current zc.buildout distribution and its
      dependencies using a weird ordering logic that bears no relation to the
      order they appear in sys.path - which can produce unexpected results as
      other distributions for zc.buildout, pip, wheel and setuptools may take
      precedence over the ones currently running.
      
      The 'zc.buildout' mode is similar to 'legacy' as it uses only the paths
      of the currently running zc.buildout and dependencies, but unlike
      'legacy' mode it respects the order in which these appear in sys.path,
      avoiding unexpected results.
      
      This mode is set to the default because it is closest to 'legacy' mode
      and because it has a nice property: running in succession
      
        `buildout buildout:extra-paths= bootstrap` (1)
        `bin/buildout` (2)
      
      will result in (1) installing zc.buildout and its dependencies in
      ./eggs in isolation from the environment, and (2) using only the
      paths of these in ./eggs, i.e. continuing to operate in isolation,
      even without setting extra-paths explictly.
      1f3977f8
    • Xavier Thompson's avatar
      [fix] Fix bootstrap working set order · bec365d0
      Xavier Thompson authored
      In bootstrap we potentially copy eggs from the working set to ./eggs.
      We then reconstruct the same working set using the moved locations.
      
      This commits ensures we keep a correct working set order throughout
      and that we avoid activating unintended dists.
      bec365d0
    • Xavier Thompson's avatar
      [fix] Fix working set sorting · b05e8a41
      Xavier Thompson authored
      If a dist in the computed working set is at a location shared with
      other dists - such as site-packages - then when generating scripts
      these other packages may overshadow the next items on the sys.path
      and result in importing a different version than the one installed
      and intended by buildout.
      
      To avert this, a sort of the working set was introduced at various
      points just before generating a script.
      
      However, that sort put the paths referenced from an `.egg-link` in
      ./develop-eggs first. This is truly problematic because dists from
      site-packages which are not eggs - e.g. dists installed with pip -
      can become referenced as `.egg-link` during buildout bootstrap and
      the sort then causes site-packages to be one of the first items in
      sys.path.
      
      In particular when running buildout bootstrap from a venv in which
      zc.buildout was installed by pip, if any one of zc.buildout or its
      dependencies from the venv meets the version requirements, then it
      can cause the generated bin/buildout to import the dists only from
      the venv's site-packages, even when some do not meet requirements.
      
      To fix this, the sort now puts the dists from `./eggs` first as we
      know their locations contain only a single dist, and then puts the
      dists from ./develop-eggs which have locations inside the buildout
      directory before the others.
      
      The previous sort was also activating all the dists from the paths
      of the already activated dists.
      
      Note that this also means that any working set must be manipulated
      with care in general to avoid activating unintended dists from the
      locations of the already activated dists.
      b05e8a41
    • Xavier Thompson's avatar
      [fix] Use only ws.find in install · 815cdf75
      Xavier Thompson authored
      Replace `pkg_resources.Environment(ws.entries).best_match(req, ws)`
      with `ws.find(req)`.
      
      The first already starts by calling `ws.find(req)` to attempt to find
      an already activated dist in the working set, but if none is found it
      then proceeds to scan through the entries of the environment - i.e.
      the locations of the directly-requested distributions, `ws.entries` -
      to activate a dist at these locations if one matches.
      
      This is problematic when directly-requested distributions are found in
      a location shared by multiple dists, such as site-packages: this gives
      that location precedence over the normal order of locations scanned by
      easy_install, and can result in undesired versions being chosen over
      versions available in ./eggs or in ./develop-eggs. The random aspect
      of this is also problematic, as the order of paths considered will
      depend on the order of the directly-requested distributions and where
      they are found.
      815cdf75
    • Xavier Thompson's avatar
      [feat] Respect pinned versions in bootstrap · 765fd23e
      Xavier Thompson authored
      If zc.buildout or its dependencies have pinned versions that do not
      match the currently running versions, they are now installed in the
      local eggs directory from scratch according to the pinned versions.
      
      In offline mode this merely ensures that versions that satisfy the
      requirements are already available. This is the case when the eggs
      are already installed, or when the running versions are a match to
      the pinned versions or the absence of a pinned version.
      
      If after this matching versions of zc.buildout and its dependencies
      are not located in the local eggs or develop-eggs directories, they
      are copied there as was already the case before.
      765fd23e
    • Xavier Thompson's avatar
      58cbdbd5
  2. 13 Mar, 2024 1 commit
  3. 08 Nov, 2022 2 commits
  4. 06 Nov, 2022 22 commits