diff --git a/.travis.yml b/.travis.yml
index c2f884d..d5ce50a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,4 @@
-sudo: required
-services:
-  - docker
+language: nix
 branches:
   only:
   - master
@@ -19,7 +17,7 @@ script:
     echo "SITEURL = 'http://weekly.nixos.org'" >> pelicanconf.py;
     echo "WITH_FUTURE_DATES = True" >> pelicanconf.py;
   fi
-- ./travis-build -Q default.nix;
+- nix-build -Q default.nix;
 
 after_success:
 - env
diff --git a/content/2018/04-nixconf0218-nix-core-team-binary-cache-improvements.rst b/content/2018/04-nixconf0218-nix-core-team-binary-cache-improvements.rst
index ca6ab49..2b2f116 100644
--- a/content/2018/04-nixconf0218-nix-core-team-binary-cache-improvements.rst
+++ b/content/2018/04-nixconf0218-nix-core-team-binary-cache-improvements.rst
@@ -16,7 +16,7 @@ Wednesday in the morning (European timezone).
 You're more than welcome to submit new items with a short description
 on `latest pull request`_
 
-.. `latest pull request`: https://github.com/NixOS/nixos-weekly/pulls
+-.. _`latest pull request`: https://github.com/NixOS/nixos-weekly/pulls
 
 Domen
 
@@ -36,7 +36,7 @@ News
 
 - `Patreon to support the NixOS OfBorg infrastructure`_
 
-  This supports `@grhmc`_\'s infrastructure costs for the OfBorg tooling.
+  This supports Graham's infrastructure costs for the OfBorg tooling.
 
 - `Introducing the Nix Core Team`_
 
diff --git a/default.nix b/default.nix
index 093e2a3..1007c42 100644
--- a/default.nix
+++ b/default.nix
@@ -1,6 +1,4 @@
-let importFromGithub = import ./importFromGithub.nix; in
-{ pkgs ? importFromGithub ./nixpkgs.json {}
-, pkgs-python ? importFromGithub ./nixpkgs-python.json { inherit pkgs; }
+{ pkgs ? import ./nixpkgs.nix
 }:
 
 pkgs.stdenv.mkDerivation {
@@ -9,9 +7,9 @@ pkgs.stdenv.mkDerivation {
     builtins.filterSource
       (path: type: baseNameOf path != "result")
       ./.;
-  buildInputs =
-    [ pkgs-python.pelican.packages.pelican
-      pkgs-python.pelican.packages.livereload
+  buildInputs = with pkgs.python3Packages;
+    [ pelican
+      livereload
     ];
   buildPhase = ''
     pelican
diff --git a/importFromGithub.nix b/importFromGithub.nix
deleted file mode 100644
index 9968ca1..0000000
--- a/importFromGithub.nix
+++ /dev/null
@@ -1,61 +0,0 @@
-file:
-
-let
-
-  fetchFromGithub =
-    # from https://nixos.wiki/wiki/How_to_fetch_Nixpkgs_with_an_empty_NIX_PATH
-    { rev                             # The Git revision of nixpkgs to fetch
-    , sha256                          # The SHA256 of the downloaded data
-    , owner ?  "NixOS"
-    , repo ? "nixpkgs"
-    , system ? builtins.currentSystem # This is overridable if necessary
-    }:
-    
-    with {
-      ifThenElse = { bool, thenValue, elseValue }: (
-        if bool then thenValue else elseValue);
-    };
-    
-    ifThenElse {
-      bool = (0 <= builtins.compareVersions builtins.nixVersion "1.12");
-    
-      # In Nix 1.12, we can just give a `sha256` to `builtins.fetchTarball`.
-      thenValue = (
-        builtins.fetchTarball {
-          url = "https://github.com/${owner}/${repo}/archive/${rev}.tar.gz";
-          inherit sha256;
-        });
-    
-      # This hack should at least work for Nix 1.11
-      elseValue = (
-        (rec {
-          tarball = import <nix/fetchurl.nix> {
-            url = "https://github.com/${owner}/${repo}/archive/${rev}.tar.gz";
-            inherit sha256;
-          };
-    
-          builtin-paths = import <nix/config.nix>;
-          
-          script = builtins.toFile "nixpkgs-unpacker" ''
-            "$coreutils/mkdir" "$out"
-            cd "$out"
-            "$gzip" --decompress < "$tarball" | "$tar" -x --strip-components=1
-          '';
-    
-          nixpkgs = builtins.derivation {
-            name = "nixpkgs-${builtins.substring 0 6 rev}";
-    
-            builder = builtins.storePath builtin-paths.shell;
-    
-            args = [ script ];
-    
-            inherit tarball system;
-    
-            tar       = builtins.storePath builtin-paths.tar;
-            gzip      = builtins.storePath builtin-paths.gzip;
-            coreutils = builtins.storePath builtin-paths.coreutils;
-          };
-        }).nixpkgs);
-    };
-
-in import (fetchFromGithub (builtins.fromJSON (builtins.readFile file)))
diff --git a/nix-build-docker b/nix-build-docker
deleted file mode 100755
index 6080c3c..0000000
--- a/nix-build-docker
+++ /dev/null
@@ -1,10 +0,0 @@
-#!/usr/bin/env sh
-
-rm -rf result
-nix-build $@
-
-mv result result.link
-mkdir result
-cp -r result.link/* result
-chown -R $HOST_USER_ID:$HOST_GROUP_ID result
-rm -rf result.link
diff --git a/nixpkgs-python.json b/nixpkgs-python.json
deleted file mode 100644
index a21dfb6..0000000
--- a/nixpkgs-python.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "owner": "garbas",
-  "repo": "nixpkgs-python",
-  "rev": "000e638ab79687130ef5088df975be6bc9507150",
-  "sha256": "11i215j0s0smi25yws74h2m2b84jpf89nj0m63smy1hv39gf28lr"
-}
diff --git a/nixpkgs.json b/nixpkgs.json
deleted file mode 100644
index 5a5a04f..0000000
--- a/nixpkgs.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "owner": "NixOS",
-  "repo": "nixpkgs-channels",
-  "rev": "ade98dc442ea78e9783d5e26954e64ec4a1b2c94",
-  "sha256": "047p5n3dk460s940ms8bih0i0dqmy4nlw0ylz9ysni97jk2xdpwk"
-}
diff --git a/nixpkgs.nix b/nixpkgs.nix
new file mode 100644
index 0000000..b3ddf86
--- /dev/null
+++ b/nixpkgs.nix
@@ -0,0 +1,9 @@
+let
+  fetchTarball = { url, sha256 }@attrs:
+    if builtins.lessThan builtins.nixVersion "1.12"
+    then builtins.fetchTarball { inherit url; }
+    else builtins.fetchTarball attrs;
+in import (fetchTarball {
+  url = "https://github.com/NixOS/nixpkgs/archive/b619e0b016c5c79920aa06b78ccf936e56eaf45d.tar.gz";
+  sha256 = "1bvnw9dvcbm69s9xbb2npx42zns6zq7jwang8d865pnzb0clf5sv";
+}) { config = {}; overlays = []; }
diff --git a/travis-build b/travis-build
deleted file mode 100755
index 2918eb0..0000000
--- a/travis-build
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env sh
-
-docker run \
-       -e HOST_USER_ID=$(id -u $USER) \
-       -e HOST_GROUP_ID=$(id -g $USER) \
-       -v $PWD:/mnt \
-       -w /mnt \
-       nixos/nix:1.11.14 \
-       ./nix-build-docker