Conda command not exported to subshells #7753
Description
Context
I'm writing a bash script for installing and updating a system that uses conda for package management and am trying to test whether the user's shell already has conda set up with the correct environment. Prior to conda version 4.4 I could test for whether conda was on the PATH using which conda before running conda info, but with 4.4 conda is shell function. I attempted to use type -t conda to work around this, but then found that conda isn't exported to subshells.
OS: Ubuntu 18.04
Current Behavior
Sourcing etc/profile.d/conda.sh defines several shell functions, but these are not set to be exported to subshells. As a result bash scripts started by the shell don't have access to the conda command.
Steps to Reproduce
With miniconda 4.4 or greater installed...
$ source /var/panoptes/miniconda/etc/profile.d/conda.
$ type -t conda
function
$ bash # Start a nested shell
$ type conda
bash: type: conda: not found
Expected Behavior
Ideally the conda command would be exported to nested shells so that my install script can determine whether to tell the user that they need to logout and log back in again; note that the users of this script are generally not experienced with Linux, so we want to provide simple steps like log-out/log-in, rather than several commands that can get confusing. But we want to avoid asking for them to log-out more often than necessary, hence the desire to determine whether the environment was OK already.
Environment Information
`conda info`
active environment : panoptes-env
active env location : /var/panoptes/miniconda/envs/panoptes-env
shell level : 1
user config file : /home/james/.condarc
populated config files : /home/james/.condarc
conda version : 4.5.11
conda-build version : not installed
python version : 3.7.0.final.0
base environment : /var/panoptes/miniconda (writable)
channel URLs : https://conda.anaconda.org/astropy/linux-64
https://conda.anaconda.org/astropy/noarch
https://repo.anaconda.com/pkgs/main/linux-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/free/linux-64
https://repo.anaconda.com/pkgs/free/noarch
https://repo.anaconda.com/pkgs/r/linux-64
https://repo.anaconda.com/pkgs/r/noarch
https://repo.anaconda.com/pkgs/pro/linux-64
https://repo.anaconda.com/pkgs/pro/noarch
https://conda.anaconda.org/conda-forge/linux-64
https://conda.anaconda.org/conda-forge/noarch
package cache : /var/panoptes/miniconda/pkgs
/home/james/.conda/pkgs
envs directories : /var/panoptes/miniconda/envs
/home/james/.conda/envs
platform : linux-64
user-agent : conda/4.5.11 requests/2.19.1 CPython/3.7.0 Linux/4.15.0-29-generic ubuntu/18.04 glibc/2.27
UID:GID : 1000:1000
netrc file : None
offline mode : False
`conda config --show-sources`
==> /home/james/.condarc <==
channels:
- astropy
- defaults
- conda-forge
`conda list --show-channel-urls`
# packages in environment at /var/panoptes/miniconda/envs/panoptes-env:
#
# Name Version Build Channel
astroplan 0.4 <pip>
astropy 3.0.4 <pip>
astropy-healpix 0.2.1 <pip>
astroscrappy 1.0.5 <pip>
atomicwrites 1.2.1 <pip>
attrs 18.2.0 <pip>
blas 1.0 mkl defaults
ca-certificates 2018.03.07 0 defaults
cachetools 2.1.0 <pip>
ccdproc 1.3.0.post1 <pip>
certifi 2018.8.24 py36_1 defaults
chardet 3.0.4 <pip>
cloudpickle 0.5.5 <pip>
codecov 2.0.15 <pip>
coverage 4.5.1 <pip>
coveralls 1.5.0 <pip>
cycler 0.10.0 <pip>
dask 0.19.1 <pip>
dateparser 0.7.0 <pip>
decorator 4.3.0 <pip>
docopt 0.6.2 <pip>
ffmpy 0.2.2 <pip>
gcloud 0.18.3 <pip>
google-api-core 1.3.0 <pip>
google-auth 1.5.1 <pip>
google-cloud-core 0.28.1 <pip>
google-cloud-storage 1.11.0 <pip>
google-resumable-media 0.3.1 <pip>
googleapis-common-protos 1.5.3 <pip>
hexdump 3.3 <pip>
httplib2 0.11.3 <pip>
idna 2.7 <pip>
intel-openmp 2018.0.3 0 defaults
kiwisolver 1.0.1 <pip>
libedit 3.1.20170329 h6b74fdf_2 defaults
libffi 3.2.1 hd88cf55_4 defaults
libgcc-ng 8.2.0 hdf63c60_1 defaults
libgfortran-ng 7.3.0 hdf63c60_0 defaults
libstdcxx-ng 8.2.0 hdf63c60_1 defaults
matplotlib 2.2.3 <pip>
mkl 2018.0.3 1 defaults
mkl_fft 1.0.4 py36h4414c95_1 defaults
mkl_random 1.0.1 py36h4414c95_1 defaults
mocket 2.4.0 <pip>
more-itertools 4.3.0 <pip>
ncurses 6.1 hf484d3e_0 defaults
networkx 2.1 <pip>
numpy 1.15.1 py36h1d66e8a_0 defaults
numpy-base 1.15.1 py36h81de0dd_0 defaults
oauth2client 4.1.3 <pip>
oauthlib 2.1.0 <pip>
openssl 1.0.2p h14c3975_0 defaults
pandas 0.23.4 py36h04863e7_0 defaults
Pillow 5.2.0 <pip>
pip 10.0.1 py36_0 defaults
pluggy 0.7.1 <pip>
protobuf 3.6.1 <pip>
py 1.6.0 <pip>
pyasn1 0.4.4 <pip>
pyasn1-modules 0.2.2 <pip>
pycodestyle 2.3.1 <pip>
pymongo 3.7.1 <pip>
pyparsing 2.2.0 <pip>
pyserial 3.4 <pip>
PySocks 1.6.8 <pip>
pytest 3.8.0 <pip>
python 3.6.6 hc3d631a_0 defaults
python-dateutil 2.7.3 py36_0 defaults
python-magic 0.4.15 <pip>
pytz 2018.5 py36_0 defaults
PyWavelets 1.0.0 <pip>
PyYAML 3.13 <pip>
pyzmq 17.1.2 <pip>
readline 6.2.4.1 <pip>
readline 7.0 h7b6447c_5 defaults
regex 2018.8.29 <pip>
reproject 0.4 <pip>
requests 2.19.1 <pip>
requests-oauthlib 1.0.0 <pip>
rsa 3.4.2 <pip>
scikit-image 0.14.0 <pip>
scipy 1.1.0 <pip>
setuptools 40.2.0 py36_0 defaults
six 1.11.0 py36_1 defaults
sqlite 3.24.0 h84994c4_0 defaults
tk 8.6.8 hbc83047_0 defaults
toolz 0.9.0 <pip>
transitions 0.6.8 <pip>
tweepy 3.6.0 <pip>
tzlocal 1.5.1 <pip>
urllib3 1.23 <pip>
wcsaxes 0.9 <pip>
wheel 0.31.1 py36_0 defaults
xz 5.2.4 h14c3975_4 defaults
zlib 1.2.11 ha838bed_2 defaults