[conda] How to select a CRAN mirror in conda-build?

[Marek Gierliński]

I'm trying to install R package kableExtra in my environment:

conda skeleton cran kableextra
conda-build --R 3.4.2 r-kableextra

Every time I do this I get an error message:

Downloading
https://mran.microsoft.com/snapshot/2018-01-01/src/contrib/kableExtra_0.8.0.tar.gz
Error: HTTP 404 NOT FOUND for url
<https://mran.microsoft.com/snapshot/2018-01-01/src/contrib/kableExtra_0.8.0.tar.gz>

There is a cran_mirror variable in the r-kableextra/meta.yaml file and, in
this case, it defaults to https://mran.microsoft.com/snapshot/2018-01-01/.
Alas, the package is not found there.

I couldn't find any way of changing this variable via conda-build or conda
skeleton parameters, so I had to edit the meta.yaml file and manually
replaced {{ cran_mirror }} with https://cran.r-project.org. This solved the
problem.

How do I select CRAN mirror without editing the meta.yaml file?

[Marek Gierliński]

I believe I tried this, but the resulting meta.yaml file still contained
cran_mirror variable.

I will try the other method.

Thanks a lot!

Marek

An alternative is to pass --cran-url when you call conda skeleton cran,
e.g. with https://mran.microsoft.com/snapshot/2018-01-01/
We've switched to MRAN since it provides snapshotting which is a very
useful feature for reproducibility.
On Mon, Apr 23, 2018 at 11:37 AM, Marek Gierliński <

Post by Marek Gierliński
conda skeleton cran kableextra
conda-build --R 3.4.2 r-kableextra
Downloading
https://mran.microsoft.com/snapshot/2018-01-01/src/contrib/kableExtra_0.8.0.tar.gz
Error: HTTP 404 NOT FOUND for url <
https://mran.microsoft.com/snapshot/2018-01-01/src/contrib/kableExtra_0.8.0.tar.gz
There is a cran_mirror variable in the r-kableextra/meta.yaml file and,
in this case, it defaults to
https://mran.microsoft.com/snapshot/2018-01-01/. Alas, the package is
not found there.
I couldn't find any way of changing this variable via conda-build or conda
skeleton parameters, so I had to edit the meta.yaml file and manually
replaced {{ cran_mirror }} with https://cran.r-project.org. This solved
the problem.
How do I select CRAN mirror without editing the meta.yaml file?
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Dr Marek Gierliński
The Data Analysis Group
The Barton Group
Computational Biology and GRE
School of Life Sciences
University of Dundee, Dundee, Scotland, UK.
Tel: [phone]
www.compbio.dundee.ac.uk/dag.html

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