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説明
Documentation URL: https://docs.bazel.build/versions/master/install-compile-source.html
Python. Versions 2 and 3 are supported, installing one of them is enough.
But compiling Bazel 3.1.0 with Python 2 fails with the following error.
ERROR: /[...]/src/BUILD:305:2: Executing genrule //src:embedded_tools_nojdk failed (Exit 1): bash failed: error executing command
(cd /tmp/bazel_E1NyC7jk/out/execroot/io_bazel && \
exec env - \
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \
/bin/bash -c 'source external/bazel_tools/tools/genrule/genrule-setup.sh; bazel-out/host/bin/src/create_embedded_tools "bazel-out/k8-opt/bin/src/embedded_tools_nojdk.zip" bazel-out/k8-opt/bin/src/embedded_tools_nojdk.params')
Execution platform: //:default_host_platform
Error occurred while attempting to use the default Python toolchain (@rules_python//python:autodetecting_toolchain).
According to '/usr/bin/python -V', version is 'Python 2.7.5', but we need version 3. PATH is:
[...]