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| This page is just a workspace for issues and needs regarding to R abuild. | | {{Delete|This page is completely unused and therefor can be deleted.}} |
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| == CRAN_mirrors.csv ==
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| Alba reported the following issue:
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| <pre>
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| install.packages("ggplot2")
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| --- Please select a CRAN mirror for use in this session ---
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| Warning: failed to download mirrors file (cannot download all files);
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| using local file '/usr/share/doc/R//CRAN_mirrors.csv'
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| Error in file(file, "rt") : cannot open the connection
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| In addition: Warning messages:
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| 1: In download.file(url, destfile = f, quiet = TRUE) :
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| URL 'https://cran.r-project.org/CRAN_mirrors.csv': status was
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| 'Problem with the SSL CA cert (path? access rights?)'
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| 2: In file(file, "rt") :
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| cannot open file '/usr/share/doc/R//CRAN_mirrors.csv': No such file
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| or directory
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| </pre>
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| I can’t reproduce it; when I’ve tried it on fresh Alpine installation, [http://haste.fit.cvut.cz/anowopo.sh|it works correctly for me].
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| It seems that sometimes R needs CRAN_mirrors.csv, but it apparently installs it into docs, so it’s separated in R-doc subpackage…
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| == Plot and X11 ==
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| For plotting X11 libs and other graphic libs are needed. Quite huge stuff. Maybe we should provide two packages, something like with OpenJDK – R as a full-blown package with all dependencies and R-base as a lightweight package without X11?
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| == Installing R packages with C extensions ==
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| Some R packages (like ggplot2) contains C extensions, so it needs header files, make and probably the whole C build environment to build them.
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| == Missing depends_dev ==
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| I forgot to add depends_dev. However, I don’t know how to find what exactly are dev dependencies of R. The same as makedepends?
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| == R_HOME ==
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| I thought that environment variable R_HOME should be set globally. As I found some packages needs this variable. However, R complains:
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| <pre>WARNING: ignoring environment value of R_HOME</pre>
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| Martin Morgan explained me on r-help mailing list, that this variable is really not needed to be set system-wide.
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| <blockquote>
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| R_HOME is set when R starts
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| ~$ env|grep R_HOME
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| ~$ R --vanilla -e "Sys.getenv('R_HOME')"
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| > Sys.getenv('R_HOME')
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| [1] "/home/mtmorgan/bin/R-3-3-branch"
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| and (after reading the documentation in ?R_HOME it the R help system)
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| ~$ R RHOME
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| /home/mtmorgan/bin/R-3-3-branch
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| so there is no need to set it in a system-wide profile. It is sometimes referenced inside an R package source tree that uses C or other compiled code in a Makevars file, as described in the 'Writing R Extensions' manual
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| https://cran.r-project.org/doc/manuals/r-release/R-exts.html
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| e.g., the section on configure and cleanup
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| https://cran.r-project.org/doc/manuals/r-release/R-exts.html#Configure-and-cleanup
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| In these circumstances it has been set by the R process that is compiling the source code.
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| </blockquote>
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