我已经看到很多关于此错误的问题，但是似乎没有建议的解决方案对我有用。我在Heroku上部署了python应用程序，但在推送它时遇到此错误。我在用 https://github.com/virtualstaticvoid/heroku-buildpack-r.git#heroku-16 和heroku / python作为我的应用程序的两个buildpack。我在python 3.6.8上并安装rpy2 2.9.5
在部署时，heroku首先安装R（成功地，在存储库中有一个init.R文件），然后将该应用检测为Python应用，然后开始安装依赖项（在require.txt文件中），并在出现错误时给出错误进入rpy2==2.9.5
我看到了this answer，但不知道如何在Heroku上尝试。
这是来自部署尝试的完整日志
-----> R Console app detected
-----> Vendoring R 3.4.4 for heroku-16 stack (latest)
Retrieving R binaries from cache
-----> Executing R init script
Installing package into ‘/usr/local/lib/R/site-library’
(as ‘lib’ is unspecified)
trying URL 'https://cloud.r-project.org/src/contrib/blockTools_0.6-3.tar.gz'
Content type 'application/x-gzip' length 51373 bytes (50 KB)
==================================================
downloaded 50 KB
* installing *source* package ‘blockTools’ ...
** package ‘blockTools’ successfully unpacked and MD5 sums checked
** libs
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c getDist.c -o getDist.o
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c naive.c -o naive.o
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c optgreed.c -o optgreed.o
gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG -fpic -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -g -c util.c -o util.o
g++ -shared -L/usr/lib/R/lib -Wl,-Bsymbolic-functions -Wl,-z,relro -o blockTools.so getDist.o naive.o optgreed.o util.o -L/usr/lib/R/lib -lR
installing to /usr/local/lib/R/site-library/blockTools/libs
** R
** data
** demo
** inst
** preparing package for lazy loading
** help
*** installing help indices
** building package indices
** testing if installed package can be loaded
* DONE (blockTools)
The downloaded source packages are in
‘/tmp/RtmpKojUrP/downloaded_packages’
Loading required package: blockTools
Unit 1 data stored as file sdata.RData.
The current working directory is /
Unit 1 assigned to Treatment 2.
The new data as entered:
ID [API INPUT] age Tr
1 [API INPUT] [API INPUT] 25 Treatment 2
R 3.4.4 successfully installed (with init)
-----> Caching build outputs
Build took 50 seconds to complete
-----> Python app detected
-----> Installing python-3.6.8
-----> Installing pip
-----> Installing SQLite3
-----> Installing requirements with pip
Collecting falcon==1.4.1 (from -r /tmp/build_888a086087211b8118b0e152044beded/requirements.txt (line 1))
Downloading https://files.pythonhosted.org/packages/e8/d0/20bb807dee65f1f163754670557b128eafce1710f6c9c363a38e357f3783/falcon-1.4.1-py2.py3-none-any.whl (159kB)
Collecting gunicorn==19.8.1 (from -r /tmp/build_888a086087211b8118b0e152044beded/requirements.txt (line 2))
Downloading https://files.pythonhosted.org/packages/55/cb/09fe80bddf30be86abfc06ccb1154f97d6c64bb87111de066a5fc9ccb937/gunicorn-19.8.1-py2.py3-none-any.whl (112kB)
Collecting Jinja2==2.10 (from -r /tmp/build_888a086087211b8118b0e152044beded/requirements.txt (line 3))
Downloading https://files.pythonhosted.org/packages/7f/ff/ae64bacdfc95f27a016a7bed8e8686763ba4d277a78ca76f32659220a731/Jinja2-2.10-py2.py3-none-any.whl (126kB)
Collecting MarkupSafe==1.0 (from -r /tmp/build_888a086087211b8118b0e152044beded/requirements.txt (line 4))
Downloading https://files.pythonhosted.org/packages/4d/de/32d741db316d8fdb7680822dd37001ef7a448255de9699ab4bfcbdf4172b/MarkupSafe-1.0.tar.gz
Collecting python-mimeparse==1.6.0 (from -r /tmp/build_888a086087211b8118b0e152044beded/requirements.txt (line 5))
Downloading https://files.pythonhosted.org/packages/26/2e/03bce213a9bf02a2750dcb04e761785e9c763fc11071edc4b447eacbb842/python_mimeparse-1.6.0-py2.py3-none-any.whl
Collecting rpy2==2.9.5 (from -r /tmp/build_888a086087211b8118b0e152044beded/requirements.txt (line 6))
Downloading https://files.pythonhosted.org/packages/02/d1/074ffbbe7b4bf74c60b75d74c8e67a1e4515b0d85f85cd6540e39610754a/rpy2-2.9.5.tar.gz (194kB)
Complete output from command python setup.py egg_info:
Error: Tried to guess R's HOME but no command 'R' in the PATH.
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-d2_abgxe/rpy2/
! Push rejected, failed to compile Python app.
! Push failed