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Add support for build-only packages

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Sometimes an element needs packages installed so that it can
perform tasks but those package are not appropriate for the
final image content. Add a "build-only" flag to package-install-squash
which will cause package to be installed at the beginning of the
phase and then uninstalled at the end of the phase.

Change-Id: Ie01b795991710c93f6b669c8f14b57eb4412c1d5
This commit is contained in:
Monty Taylor 2020-03-18 14:39:17 -05:00
parent 64d2ea26e7
commit c113703050
2 changed files with 13 additions and 3 deletions
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7
diskimage_builder/elements/package-installs/README.rst
View File

@ -30,6 +30,8 @@ example ``package-installs.yaml``
dib_python_version: 2
python3-dev:
dib_python_version: 3
libssl-dev:
build-only: True
package-a:
when: DIB_USE_PACKAGE_A = 1
package-b:
@ -60,6 +62,11 @@ Setting the installtype property causes the package only to be installed if
the specified installtype would be used for the element. See the
diskimage-builder docs for more information on installtypes.
Setting ``build-only`` will cause the package to be added both to the
list of packages to be installed and to the list of packages to be
uninstalled. This allows expressing build-time dependencies that should
not end up in the final image.
The ``arch`` property is a comma-separated list of architectures to
install for. The ``not-arch`` is a comma-separated list of
architectures the package should be excluded from. Either ``arch`` or

9
diskimage_builder/elements/package-installs/bin/package-installs-squash
View File

@ -113,9 +113,11 @@ def collect_data(data, objs, element_name):
if not params:
params = {}
phase = params.get('phase', 'install.d')
install = "install"
installs = ["install"]
if 'uninstall' in params:
install = "uninstall"
installs = ["uninstall"]
if 'build-only' in params:
installs = ["install", "uninstall"]
# Filter out incorrect installtypes
installtype = params.get('installtype', None)
@ -136,7 +138,8 @@ def collect_data(data, objs, element_name):
continue
if valid_installtype and valid_arch and valid_dib_python_version:
data[phase][install].append((pkg_name, element_name))
for install in installs:
data[phase][install].append((pkg_name, element_name))
return data