diff options
| -rw-r--r-- | site/docs/skylark/repository_rules.md | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/site/docs/skylark/repository_rules.md b/site/docs/skylark/repository_rules.md index ef19eccbb9..8e492ac091 100644 --- a/site/docs/skylark/repository_rules.md +++ b/site/docs/skylark/repository_rules.md @@ -75,11 +75,12 @@ cause an execution of the implementation function. The implementation function can be _restarted_ if a dependency it request is _missing_. The beginning of the implementation function -will be re-executed after the dependency has been resolved. - -File given as a label are declared as dependencies, so requesting it -might interrupt the function and restart it later, re-executing the -part up till there. +will be re-executed after the dependency has been resolved. To avoid +unnecessary restarts (which are expensive, as network access might +have to be repeated), label arguments are prefetched, provided all +label arguments can be resolved to an existing file. Note that resolving +a path from a string or a label that was constructed only during execution +of the function might still cause a restart. Finally, for non-`local` repositories, only a change in the following dependencies might cause a restart: |