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Migrate away from sp-grep (#1119)

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Switches the last consumers of it to a simpler utility function that
uses `pkgutil.find_loader()`:
https://docs.python.org/3/library/pkgutil.html#pkgutil.find_loader

Both of these consumers are covered by existing tests.

Then removes `sp-grep` and the remaining parts of `pip-pop`.

Closes @W-8208817@.
This commit is contained in:
Ed Morley
2020-11-12 17:42:51 +00:00
committed by GitHub
parent 768d3fb9e5
commit 71aef447a6
9 changed files with 16 additions and 654 deletions
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bin/utils
+8
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@@ -96,3 +96,11 @@ python_sqlite3_check() {
( python2_check "$VERSION" && version_gte "$VERSION" "$MIN_PYTHON_2" ) \
|| ( python3_check "$VERSION" && version_gte "$VERSION" "$MIN_PYTHON_3" )
}
is_module_available() {
# Returns 0 is the specified module exists, otherwise returns 1.
# Uses pkgutil rather than pkg_resources or pip's CLI, since pkgutil exists
# in the stdlib, and doesn't depend on the choice of package manager.
local module_name="${1}"
python -c "import sys, pkgutil; sys.exit(0 if pkgutil.find_loader('${module_name}') else 1)"
}