29969a5ec7
This attempts to fix the issue described at https://github.com/NixOS/nixpkgs/pull/22219#issuecomment-291801133. Any change to the custom packages passed to RStudio causes this to completely rebuild RStudio, which is completely unnecessary and also a bit of a hindrance as it's a fairly slow build. This rolls back most of that old PR, and instead implements something more like rWrapper. Existing configurations with the old useRPackages will break.
104 lines
2.5 KiB
Markdown
104 lines
2.5 KiB
Markdown
R packages
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==========
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## Installation
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Define an environment for R that contains all the libraries that you'd like to
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use by adding the following snippet to your $HOME/.config/nixpkgs/config.nix file:
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```nix
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{
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packageOverrides = super: let self = super.pkgs; in
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{
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rEnv = super.rWrapper.override {
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packages = with self.rPackages; [
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devtools
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ggplot2
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reshape2
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yaml
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optparse
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];
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};
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};
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}
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```
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Then you can use `nix-env -f "<nixpkgs>" -iA rEnv` to install it into your user
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profile. The set of available libraries can be discovered by running the
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command `nix-env -f "<nixpkgs>" -qaP -A rPackages`. The first column from that
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output is the name that has to be passed to rWrapper in the code snipped above.
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However, if you'd like to add a file to your project source to make the
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environment available for other contributors, you can create a `default.nix`
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file like so:
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```nix
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let
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pkgs = import <nixpkgs> {};
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stdenv = pkgs.stdenv;
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in with pkgs; {
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myProject = stdenv.mkDerivation {
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name = "myProject";
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version = "1";
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src = if pkgs.lib.inNixShell then null else nix;
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buildInputs = with rPackages; [
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R
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ggplot2
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knitr
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];
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};
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}
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```
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and then run `nix-shell .` to be dropped into a shell with those packages
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available.
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## RStudio
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RStudio uses a standard set of packages and ignores any custom R
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environments or installed packages you may have. To create a custom
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environment, see `rstudioWrapper`, which functions similarly to
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`rWrapper`:
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```nix
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{
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packageOverrides = super: let self = super.pkgs; in
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{
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rstudioEnv = super.rstudioWrapper.override {
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packages = with self.rPackages; [
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dplyr
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ggplot2
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reshape2
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];
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};
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};
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}
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```
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Then like above, `nix-env -f "<nixpkgs>" -iA rstudioEnv` will install
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this into your user profile.
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## Updating the package set
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```bash
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nix-shell generate-shell.nix
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Rscript generate-r-packages.R cran > cran-packages.nix.new
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mv cran-packages.nix.new cran-packages.nix
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Rscript generate-r-packages.R bioc > bioc-packages.nix.new
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mv bioc-packages.nix.new bioc-packages.nix
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```
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`generate-r-packages.R <repo>` reads `<repo>-packages.nix`, therefor the renaming.
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## Testing if the Nix-expression could be evaluated
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```bash
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nix-build test-evaluation.nix --dry-run
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```
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If this exits fine, the expression is ok. If not, you have to edit `default.nix`
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