[Nix-dev] help with Travis builds

[zimbatm]

It doesn't look like your vms are using the nix sandbox so some things
could get picked from the environment?

On Thu, 9 Jun 2016, 22:36 Azul, <mail at azulinho.com> wrote:

> n00b here
>
> Trying to sort out PR: https://github.com/NixOS/nixpkgs/pull/15986
>
> while "it works on my machine", travis barks out at me with:
> https://travis-ci.org/NixOS/nixpkgs/builds/135414974
>
> so I looked into the travis builds to find out what they were doing, and
> come up with this to replicate them locally.
>
> This Vagrantfile fails with the same error as Travis
>
> ```
> vbox_version = `VBoxManage --version`
>
> Vagrant.configure(2) do |config|
>   config.vm.box = "ubuntu/trusty64"
>   config.vm.network "private_network", ip: "192.168.33.96", nic_type:
> "virtio"
>
>   config.vm.provider "virtualbox" do |vb|
>      vb.memory = "3072"
>      vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
>      vb.customize ["modifyvm", :id, "--natdnsproxy1", "on"]
>      vb.customize [ "guestproperty", "set", :id,
> "/VirtualBox/GuestAdd/VBoxService/--timesync-set-threshold", 10000 ]
>      vb.customize ["modifyvm", :id, "--nictype1", "virtio"]
>      vb.customize ["modifyvm", :id, "--paravirtprovider", "kvm"] if
> vbox_version.to_f >= 5.0
>      vb.customize ["storagectl", :id, "--name", "SATAController",
> "--hostiocache", "on"]
>      vb.customize ["modifyvm", :id, "--ioapic", "on"]
>      vb.customize ["modifyvm", :id, "--cpus",
> `#{RbConfig::CONFIG['host_os'] =~ /darwin/ ? 'sysctl -n hw.ncpu' :
> 'nproc'}`.chomp]
>
>      vb.linked_clone = true if Vagrant::VERSION =~ /^1.8/
>   end
>   config.vm.provision "shell", inline: <<-SHELL
>     groupadd nixbld
>     usermod -G nixbld vagrant
>     apt-get update
>     apt-get install -y build-essential git
>     test -e /swapfile || ( dd if=/dev/zero of=/swapfile bs=1M count=2048
> &&  mkswap /swapfile )
>     swapon /swapfile
>   SHELL
>
>   config.vm.provision "shell", privileged: false, inline: <<-SHELL
>      git clone https://github.com/NixOS/nixpkgs.git
>      cd nixpkgs
>      export TRAVIS_PULL_REQUEST=15986
>     ./maintainers/scripts/travis-nox-review-pr.sh nix
>     ./maintainers/scripts/travis-nox-review-pr.sh nox
>     ./maintainers/scripts/travis-nox-review-pr.sh build
>   SHELL
> end
> ```
>
>
> But this Vagrantfile builds my PR correctly
>
> ```
> vbox_version = `VBoxManage --version`
>
> Vagrant.configure(2) do |config|
>   config.vm.box = "ubuntu/trusty64"
>   config.vm.network "private_network", ip: "192.168.33.96", nic_type:
> "virtio"
>
>   config.vm.provider "virtualbox" do |vb|
>      vb.memory = "3072"
>      vb.customize ["modifyvm", :id, "--natdnshostresolver1", "on"]
>      vb.customize ["modifyvm", :id, "--natdnsproxy1", "on"]
>      vb.customize [ "guestproperty", "set", :id,
> "/VirtualBox/GuestAdd/VBoxService/--timesync-set-threshold", 10000 ]
>      vb.customize ["modifyvm", :id, "--nictype1", "virtio"]
>      vb.customize ["modifyvm", :id, "--paravirtprovider", "kvm"] if
> vbox_version.to_f >= 5.0
>      vb.customize ["storagectl", :id, "--name", "SATAController",
> "--hostiocache", "on"]
>      vb.customize ["modifyvm", :id, "--ioapic", "on"]
>      vb.customize ["modifyvm", :id, "--cpus",
> `#{RbConfig::CONFIG['host_os'] =~ /darwin/ ? 'sysctl -n hw.ncpu' :
> 'nproc'}`.chomp]
>
>      vb.linked_clone = true if Vagrant::VERSION =~ /^1.8/
>   end
>   config.vm.provision "shell", inline: <<-SHELL
>     groupadd nixbld
>     usermod -G nixbld vagrant
>     apt-get update
>     apt-get install -y build-essential git
>     test -e /swapfile || ( dd if=/dev/zero of=/swapfile bs=1M count=2048
> &&  mkswap /swapfile )
>     swapon /swapfile || echo
>   SHELL
>
>   config.vm.provision "shell", privileged: false, inline: <<-SHELL
>      git clone https://github.com/NixOS/nixpkgs.git
>      cd nixpkgs
>      git config --global user.email "me at example.com"
>      git config --global user.name "Your Name"
>
>      git remote add Azulinho https://github.com/Azulinho/nixpkgs.git
>      git fetch Azulinho
>      git merge Azulinho/update_libgit2_to_v24
>      export NIXPKGS=$PWD
>      export TRAVIS_PULL_REQUEST=15986
>     ./maintainers/scripts/travis-nox-review-pr.sh nix
>     ./maintainers/scripts/travis-nox-review-pr.sh nox
>     . $HOME/.nix-profile/etc/profile.d/nix.sh
>     nix-build nixos/release.nix -A options --show-trace
>     nix-build pkgs/top-level/release.nix -A tarball --show-trace
>     nix-build $PWD -A python27Packages.pygit2
>     nix-build $PWD -A python35Packages.pygit2
>   SHELL
> end
> ```
>
> Before I dig into reading about nox and getting into the grittier details,
> does anyone has a hint for what could possibly be happening here?
> happy to pay back with a merged PR
>
> - azul
>
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> nix-dev at lists.science.uu.nl
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