Buildozer - 使用 buildozer 构建 apk 时出错答案

【问题标题】：Buildozer - Error while building apk with buildozerBuildozer - 使用 buildozer 构建 apk 时出错
【发布时间】：2019-07-30 04:36:36
【问题描述】：

我尝试使用 Kivy 的 Buildozer VM 通过 Buildozer 制作 apk，但出现错误：

Welcome to the Buildozer Virtual Machine.
Please see ~/Desktop/README.txt for more information
kivy@kivy-VirtualBox:~$ cd /home/kivy/Desktop/myapp
kivy@kivy-VirtualBox:~/Desktop/myapp$ buildozer android debug
# Check configuration tokens
# Ensure build layout
# Check configuration tokens
# Read available permissions from api-versions.xml
# Preparing build
# Check requirements for android
# Run 'dpkg --version'
# Cwd None
Debian `dpkg' package management program version 1.17.5 (amd64).
This is free software; see the GNU General Public License version 2 or
later for copying conditions. There is NO warranty.
# Search for Git (git)
#  -> found at /usr/bin/git
# Search for Cython (cython)
#  -> found at /usr/local/bin/cython
# Search for Java compiler (javac)
#  -> found at /usr/lib/jvm/java-7-openjdk-amd64/bin/javac
# Search for Java keytool (keytool)
#  -> found at /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/keytool
# Install platform
# Run '/usr/bin/python -m pip install -q --user \'appdirs\' \'colorama>=0.3.3\' \'jinja2\' \'six\' \'enum34; python_version<"3.4"\' \'sh>=1.10; sys_platform!="nt"\''
# Cwd None
Exception:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 122, in main
    status = self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 257, in run
    InstallRequirement.from_line(name, None))
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 172, in from_line
    return cls(req, comes_from, url=url, prereleases=prereleases)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 70, in __init__
    req = pkg_resources.Requirement.parse(req)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2667, in parse
    reqs = list(parse_requirements(s))
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2605, in parse_requirements
    line, p, specs = scan_list(VERSION,LINE_END,line,p,(1,2),"version spec")
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2573, in scan_list
    raise ValueError("Expected "+item_name+" in",line,"at",line[p:])
ValueError: ('Expected version spec in', 'enum34; python_version<"3.4"', 'at', '; python_version<"3.4"')

Storing debug log for failure in /tmp/tmpaweUPh
# Command failed: /usr/bin/python -m pip install -q --user 'appdirs' 'colorama>=0.3.3' 'jinja2' 'six' 'enum34; python_version<"3.4"' 'sh>=1.10; sys_platform!="nt"'
# 
# Buildozer failed to execute the last command
# The error might be hidden in the log above this error
# Please read the full log, and search for it before
# raising an issue with buildozer itself.
# In case of a bug report, please add a full log with log_level = 2
kivy@kivy-VirtualBox:~/Desktop/myapp$

我已经升级了appdirs、colorama、jinja2、6、sh等

我认为主要问题是 Buildozer 使用的是 python 2.7 版。如何手动将其更改为 python 版本 3+？

【问题讨论】：

标签： python python-3.x python-2.7 apk buildozer

【解决方案1】：

我不熟悉 buildozer，但在 Project description 我看到了：

使用目标 Python 3 安装 Buildozer（默认）：

...

使用目标 Python 2 安装 Buildozer
遵循与 Python 3 相同的安装和 buildozer 初始化
确保以下行在您的 buildozer.spec 文件中。：
# Changes python3 to python2
requirements = python2,kivy

所以要尝试的一件事是检查 buildozer.spec 文件中是否有引用的 sn-p，如果有，请还原它。

【讨论】：