armin created CB-13953:
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Summary: Cordova has a hard dependency on Gradle being on the path
and JAVA_HOME being set in advance
Key: CB-13953
URL: https://issues.apache.org/jira/browse/CB-13953
Project: Apache Cordova
Issue Type: Improvement
Components: cordova-android
Affects Versions: cordova-android-7.0.0
Environment: android build
Reporter: armin
Assignee: Joe Bowser
Cordova is tightly coupled with the gradle executable and it is verifying it
being on the path even though the gradle wrapper is available. Also the
JAVA_HOME has to be already available or java be on the path before running
cordova commands even though these can be set during the build.
In general there are several problems with the current gradle bootstrapping
process:
* Cordova checks for gradle being on the path and fails execution if it isn't
there even though the wrapper is already generated so gradle is not needed at
that point. The wrapper files are also on .gitignore for no reason since
committing them is fairly standard practice and they could be bundled with
cordova from the beginning to avoid dependency on gradle in general and to tie
the gradle version to the cordova version.
* In general the checks inside cordova are not sufficient to determine if a
given "requirement" is available (or will be set during the build) or not, it
should be possible to continue the build even if the build-in requirement
checks fail
* The gradle wrapper is generated by Cordova instead of the user as it should
be and as it is the gradle convention -> this means any customization process
is extremely difficult and we have no control. It is understandable to tie the
gradle version to a cordova version but this version check should be done
during execution and not before so the users can manage their own wrapper
* Cordova is using a separate gradle file for generating the wrapper and not
the actual build.gradle file -> wrapper.gradle is being used for generation
which means any configuration from build.gradle is not respected, such as
wrapper version or wrapper customization (for example we also generate the
JAVA_HOME variable into the wrapper so we would not need java or gradle on the
path at all after the initial install, as we only have a local installations)
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