What commit of nixpkgs are you tracking? Try upgrding your nixpkgs, that should have been fixed a while ago.
On Sun, Jun 1, 2014 at 4:12 PM, Andreas Herrmann <[email protected]> wrote: > Hi everyone, > > I am very new to Nix, so let me apologize in advance if this ends up being > a stupid question. > > > # First, some back story: > > The reason I got interested in Nix is that I am doing scientific computing > on a number of different machines with self-made simulation software. > Hence, I need to keep my development environments in sync on these various > machines. A tiresome task that, so far, I am performing manually. I > understand that Nix is promising to help in such situations. > > So, I went ahead and installed Nix in single user mode on my laptop which > is running on openSuse 13.1. That is, I used the install script [1], and > installed Nix under /nix. On the wiki I found a section [2] about managing > development environments, which introduces a thing called myEnvFun. It > worked out for a simple environment to use numpy: > > numpy = pkgs.myEnvFun { > name = "numpy"; > buildInputs = with pkgs; let p27=python27Packages; in [ > stdenv python > p27.readline > p27.numpy > ]; > }; > > I've installed it using `nix-env -i env-numpy`, and loaded it using ` > load-env-numpy`, and everything seems to work fine. > > $ load-env-numpy > env-numpy loaded > $ which python > /nix/store/qikwsrbsyx59ygcmb36p1rgmfclgg882-python-2.7.6/bin/python > $ python > Python 2.7.6 (default, Apr 21 2014, 11:09:09) > [GCC 4.8.2] on linux2 > Type "help", "copyright", "credits" or "license" for more information. > >>> import numpy.version > >>> numpy.version.version > '1.7.1' > > However, I would prefer to do develop using the IPython shell. So, I wrote > another environment that encorporates ipython: > > ipython = pkgs.myEnvFun { > name = "ipython"; > buildInputs = with pkgs; let p27=python27Packages; in [ > stdenv python > p27.readline > p27.ipython > p27.numpy > ]; > }; > > Installing it works just fine. Loading the environment on the other hand > doesn't. > > > # The Problem > > I get a huge amount errors about gdk-bug when I load the ipython > environment defined above: > > $ load-env-ipython > mkdir: cannot create directory ‘/lib/gdk-pixbuf-loaders-2.0/’: > Permission denied > # repeated 61 times > mkdir: cannot create directory ‘/lib/gdk-pixbuf-loaders-2.0/’: > Permission denied > > /nix/store/1j8nx7r6a7s76hj14b7lgqij7yddmvw2-gdk-pixbuf-2.30.6/nix-support/setup-hook: > line 11: /lib/gdk-pixbuf-loaders-2.0//loaders.cache: No such file or > directory > mkdir: cannot create directory ‘/lib/gdk-pixbuf-loaders-2.0/’: > Permission denied > # repeated 17 times > mkdir: cannot create directory ‘/lib/gdk-pixbuf-loaders-2.0/’: > Permission denied > env-ipython loaded > > Depsite the error messages, the environment seems to work. > > $ ipython > Python 2.7.6 (default, Apr 21 2014, 11:09:09) > Type "copyright", "credits" or "license" for more information. > > IPython 2.0.0 -- An enhanced Interactive Python. > ? -> Introduction and overview of IPython's features. > %quickref -> Quick reference. > help -> Python's own help system. > object? -> Details about 'object', use 'object??' for extra details. > > In [1]: import numpy > > In [2]: numpy.version.version > > > # My Question > > What is going on there? Is this because I'm using Nix on a host OS, > instead of NixOS? > Or, am I just missing some package in the environment? In which case, > shouldn't Nix take care of this, and make sure all dependencies are > available? > One instance of a kind-of missing dependency is already the readline > module. If I don't mention it explicitly in the environment, python is > going to complain about it missing. > > > Thanks in advance for your help. And also thanks for doing this project in > the first place. > > Best regards, > > Andreas > > [1]: https://nixos.org/nix/install > [2]: > https://nixos.org/wiki/Howto_develop_software_on_nixos#Obtaining_an_Environment_from_a_Custom_Definition > > > _______________________________________________ > nix-dev mailing list > [email protected] > http://lists.science.uu.nl/mailman/listinfo/nix-dev > > -- www.debian.org - The Universal Operating System
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