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r-modules: add more environment documentation

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Use nix-shell with a `default.nix` rather than using
config.nix
This commit is contained in:
Langston Barrett 2016-10-13 22:18:16 +00:00
parent 13ff831440
commit 2b300c9bef
1 changed files with 24 additions and 0 deletions
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pkgs/development/r-modules/README.md
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@ -29,6 +29,30 @@ profile. The set of available libraries can be discovered by running the
command `nix-env -f "<nixpkgs>" -qaP -A rPackages`. The first column from that command `nix-env -f "<nixpkgs>" -qaP -A rPackages`. The first column from that
output is the name that has to be passed to rWrapper in the code snipped above. output is the name that has to be passed to rWrapper in the code snipped above.
However, if you'd like to add a file to your project source to make the
environment available for other contributors, you can create a `default.nix`
file like so:
```nix
let
pkgs = import <nixpkgs> {};
stdenv = pkgs.stdenv;
in with pkgs; {
myProject = stdenv.mkDerivation {
name = "myProject";
version = "1";
src = if pkgs.lib.inNixShell then null else nix;
buildInputs = with rPackages; [
R
ggplot2
knitr
];
};
}
```
and then run `nix-shell .` to be dropped into a shell with those packages
available.
## Updating the package set ## Updating the package set
```bash ```bash