Fuchsia OS fx 设置在构建期间失败答案

【问题标题】：Fuchsia OS fx set failing during buildFuchsia OS fx 设置在构建期间失败
【发布时间】：2019-07-18 15:14:03
【问题描述】：

完成https://fuchsia.googlesource.com/fuchsia/+/master/docs/getting_started.md中提到的安装步骤后

我使用了命令 fx set x64，它在 build/gn/preprocess_products.py 文件中产生了错误。

错误信息如下图 -

(base) xprilion@xl:~/fuchsia$ fx set x64
+ /home/xprilion/fuchsia/scripts/build-zircon.sh -v -g -t x64
+ /home/xprilion/fuchsia/zircon/prebuilt/downloads/gn gen /home/xprilion/fuchsia/out/build-zircon --root=/home/xprilion/fuchsia/zircon
Done. Made 12304 targets from 900 files in 3216ms
+ /home/xprilion/fuchsia/buildtools/gn gen /home/xprilion/fuchsia/out/x64 --check '--args=target_cpu="x64" import("//boards/x64.gni") import("//products/core.gni") if (!defined(available)) { available = [] } available+=[] if (!defined(preinstall)) { preinstall = [] } preinstall+=[] if (!defined(monolith)) { monolith = [] } monolith+=[]'
ERROR at //build/gn/packages.gni:71:26: Script returned non-zero exit code.
_preprocessed_products = exec_script("preprocess_products.py",
                         ^----------
Current dir: /home/xprilion/fuchsia/out/x64/
Command: /usr/bin/env /home/xprilion/fuchsia/build/gn/preprocess_products.py --monolith=["garnet/packages/products/base", "garnet/packages/prod/drivers"] --preinstall=[] --available=["garnet/packages/prod/vboot_reference", "bundles/tools"]
Returned 1.
stderr:

Traceback (most recent call last):
  File "/home/xprilion/fuchsia/build/gn/preprocess_products.py", line 11, in <module>
    from prepreprocess_build_packages import PackageImportsResolver, PackageLabelObserver
  File "/home/xprilion/fuchsia/build/gn/prepreprocess_build_packages.py", line 74
    except IOError, e:
                  ^
SyntaxError: invalid syntax

See //build/gn/BUILD.gn:7:1: whence it was imported.
import("//build/gn/packages.gni")
^-------------------------------

如何消除这个错误？

【问题讨论】：

标签： fuchsia

【解决方案1】：

上述问题的答案很简单——目前不支持 Python3.7，同时构建 Fuchsia。我更改为 Python3.6 并且成功了！ Python 2.7 也可以。

【讨论】：

【解决方案2】：

您在此处缺少产品信息。如果您不确定要选择哪个产品，请选择core 作为至少包含启动组件以及运行 fuchsia 所需的最少服务的产品。

$ fx set core.x64

【讨论】：