In my case, Rule
has to be invoked upon environment changes (svn revision of working directory) instead of changes of input files. So, depending on alwaysRun
, my rule is invoked either never (failing build) or always (forcing dependers to be rebuilt).
What I need is either:
Rule
has to be run or notRules and Commands are re-run not only due to input changes, but also if properties used in them change. So in your case, you will want to define a property that corresponds to the svn repository state and refer to it in your rule and/or command. Then the re-execution will happen if and only if it is necessary. Note that in qbs 1.10, such a property is provided automatically via the vcs module: http://doc-snapshots.qt.io/qbs/vcs-module.html