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https://github.com/digital-asset/daml.git
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2fde30d916
Make Scala targets deterministic by disabling writing milliseconds
timestamps into the statsfile.
Before (cache disabled)
```
$ n=1; bazel clean; bazel build //libs-scala/adjustable-clock --execution_log_json_file=execlog$n.json; rsync -aL bazel-bin output$n
$ n=2; bazel clean; bazel build //libs-scala/adjustable-clock --execution_log_json_file=execlog$n.json; rsync -aL bazel-bin output$n
$ diff -u execlog1.json execlog2.json
--- execlog1.json 2021-11-25 09:53:45.638891575 +0100
+++ execlog2.json 2021-11-25 10:01:52.831225558 +0100
@@ -311392,7 +311392,7 @@
}, {
"path": "bazel-out/k8-opt/bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/scala_version.statsfile",
"digest": {
- "hash": "1c535baa94812c16d33b6b3dcf2dec8e12b77e3a28cd1280ca2c9678840c4de6",
+ "hash": "a7f6f1b168649c1c5346ff92c69f0095b68781690e4b3f33321d8f35af8b3d77",
"sizeBytes": "16",
"hashFunctionName": "SHA-256"
}
@@ -311705,7 +311705,7 @@
}, {
"path": "bazel-out/k8-opt/bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/dependency_analyzer.statsfile",
"digest": {
- "hash": "b3af662512a906ec56abfb222f43af189b88b00ae0449bd44c25b7e90689c4db",
+ "hash": "d6c6e2a36754efea4863593a838fbfb500a66e0150d3c3e2e2490ad65c22a2cd",
"sizeBytes": "16",
"hashFunctionName": "SHA-256"
}
@@ -312025,7 +312025,7 @@
}, {
"path": "bazel-out/k8-opt/bin/libs-scala/adjustable-clock/adjustable-clock.statsfile",
"digest": {
- "hash": "4326088227e5ecf2c21e76ddb6d77c9692ef1689dd146f65ec1e75c235382251",
+ "hash": "8a6b23f3c64ce3ff171772808ca0064af52bc145a32d1b6398de124aeb813c97",
"sizeBytes": "16",
"hashFunctionName": "SHA-256"
}
$ diff -r output1 output2
diff -ur output1/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/dependency_analyzer.statsfile output2/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/dependency_analyzer.statsfile
--- output1/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/dependency_analyzer.statsfile 2021-11-25 09:53:41.706824833 +0100
+++ output2/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/dependency_analyzer.statsfile 2021-11-25 10:01:49.047160467 +0100
@@ -1 +1 @@
-build_time=2507
+build_time=2522
diff -ur output1/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/scala_version.statsfile output2/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/scala_version.statsfile
--- output1/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/scala_version.statsfile 2021-11-25 09:53:39.110780774 +0100
+++ output2/bazel-bin/external/io_bazel_rules_scala/third_party/dependency_analyzer/src/main/scala_version.statsfile 2021-11-25 10:01:46.427115402 +0100
@@ -1 +1 @@
-build_time=4162
+build_time=3946
diff -ur output1/bazel-bin/libs-scala/adjustable-clock/adjustable-clock.statsfile output2/bazel-bin/libs-scala/adjustable-clock/adjustable-clock.statsfile
--- output1/bazel-bin/libs-scala/adjustable-clock/adjustable-clock.statsfile 2021-11-25 09:53:45.282885532 +0100
+++ output2/bazel-bin/libs-scala/adjustable-clock/adjustable-clock.statsfile 2021-11-25 10:01:52.511220053 +0100
@@ -1 +1 @@
-build_time=3158
+build_time=3100
```
After (cache disabled)
```
$ n=3; bazel clean; bazel build //libs-scala/adjustable-clock --execution_log_json_file=execlog$n.json; rsync -aL bazel-bin output$n
$ n=4; bazel clean; bazel build //libs-scala/adjustable-clock --execution_log_json_file=execlog$n.json; rsync -aL bazel-bin output$n
$ diff -u execlog3.json execlog4.json
$ diff -ur output3 output4
```
See https://github.com/bazelbuild/rules_scala/pull/1298
changelog_begin
changelog_end
Co-authored-by: Andreas Herrmann <andreas.herrmann@tweag.io>
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| .. | ||
| client_server | ||
| dev_env_tool | ||
| java_testing | ||
| packaging | ||
| runfiles | ||
| scala | ||
| scalapb | ||
| sh | ||
| build_environment.bzl | ||
| BUILD.bazel | ||
| create_workspace.bzl | ||
| damlc_legacy.bzl | ||
| fat_cc_library.bzl | ||
| ghc_dwarf.bzl | ||
| grpc-bazel-apple.patch | ||
| grpc-bazel-mingw.patch | ||
| grpc-haskell-core-cpp-options.patch | ||
| grpc-haskell-core-upgrade.patch | ||
| haskell_proto3_suite_deriving_defaults.patch | ||
| haskell-c2hs.patch | ||
| haskell-ghc-8.10.7-bindist.patch | ||
| haskell-ghcide-binary-q.patch | ||
| haskell-hie-bios.patch | ||
| haskell-js-dgtable.patch | ||
| haskell-js-flot.patch | ||
| haskell-js-jquery.patch | ||
| haskell-lsp-test-no-reexport.patch | ||
| haskell-opt.patch | ||
| haskell-shake.patch | ||
| haskell-windows-extra-libraries.patch | ||
| haskell-zip.patch | ||
| haskell.bzl | ||
| hlint.bzl | ||
| java.bzl | ||
| javadoc_library.bzl | ||
| lsp-types-normalisation.patch | ||
| nixpkgs-disable-http2.patch | ||
| oracle.bzl | ||
| os_info.bzl | ||
| pkg.bzl | ||
| pom_file.bzl | ||
| pom_template.xml | ||
| proto.bzl | ||
| remote_apis_no_services.patch | ||
| rules_nodejs_bash.patch | ||
| rules_nodejs_node_dependency.patch | ||
| rules_nodejs_npm_cli_path.patch | ||
| scala_version.bzl | ||
| scala-escape-jvmflags.patch | ||
| scala.bzl | ||
| scalapb.bzl | ||