From 32481b542b38c48f064da65c3a0f6a26d12799b2 Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Sat, 13 Jan 2018 15:57:10 +0100
Subject: [PATCH] installer: init

---
 default.nix                             |  2 +
 pkgs/darwin-installer/configuration.nix | 44 ++++++++++++++++++++++
 pkgs/darwin-installer/default.nix       | 50 +++++++++++++++++++++++++
 pkgs/darwin-installer/profile.patch     | 14 +++++++
 4 files changed, 110 insertions(+)
 create mode 100644 pkgs/darwin-installer/configuration.nix
 create mode 100644 pkgs/darwin-installer/default.nix
 create mode 100644 pkgs/darwin-installer/profile.patch

diff --git a/default.nix b/default.nix
index e3648d41..44e7ea22 100644
--- a/default.nix
+++ b/default.nix
@@ -73,4 +73,6 @@ in
   inherit (eval) options config;
 
   system = eval.config.system.build.toplevel;
+
+  installer = pkgs.callPackage ./pkgs/darwin-installer {};
 }
diff --git a/pkgs/darwin-installer/configuration.nix b/pkgs/darwin-installer/configuration.nix
new file mode 100644
index 00000000..7cf87a81
--- /dev/null
+++ b/pkgs/darwin-installer/configuration.nix
@@ -0,0 +1,44 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+  imports = [ <user-darwin-config> ];
+
+  system.activationScripts.preUserActivation.text = mkBefore ''
+    darwinPath=$(NIX_PATH=${concatStringsSep ":" config.nix.nixPath} nix-instantiate --eval -E '<darwin>' 2> /dev/null) || true
+    if ! test -e "$darwinPath"; then
+        if test -t 1; then
+            read -p "Would you like to manage <darwin> with nix-channel? [y/n] " i
+        fi
+        case "$i" in
+            y|Y)
+                nix-channel --add https://github.com/LnL7/nix-darwin/archive/master.tar.gz darwin
+                nix-channel --update
+                ;;
+        esac
+    fi
+
+    if ! test -L /etc/bashrc && ! grep -q /etc/static/bashrc /etc/bashrc; then
+        if test -t 1; then
+            read -p "Would you like to load darwin configuration in /etc/bashrc? [y/n] " i
+        fi
+        case "$i" in
+            y|Y)
+                echo 'if test -e /etc/static/bashrc; then . /etc/static/bashrc; fi' | sudo tee -a /etc/bashrc
+                ;;
+        esac
+    fi
+
+    if ! test -L /etc/profile && grep -q 'etc/profile.d/nix-daemon.sh' /etc/profile; then
+        if test -t 1; then
+            read -p "Would you like to remove nix-daemon.sh configuration in /etc/profile? [y/n] " i
+        fi
+        case "$i" in
+            y|Y)
+                sudo patch -d /etc -p1 < '${./profile.patch}'
+                ;;
+        esac
+    fi
+  '';
+}
diff --git a/pkgs/darwin-installer/default.nix b/pkgs/darwin-installer/default.nix
new file mode 100644
index 00000000..058a679a
--- /dev/null
+++ b/pkgs/darwin-installer/default.nix
@@ -0,0 +1,50 @@
+{ stdenv, nix, pkgs }:
+
+let
+  nixPath = stdenv.lib.concatStringsSep ":" [
+    "darwin-config=${toString ./configuration.nix}"
+    "darwin=${toString ../..}"
+    "nixpkgs=${toString pkgs.path}"
+    "$NIX_PATH"
+  ];
+in
+
+stdenv.mkDerivation {
+  name = "darwin-installer";
+
+  unpackPhase = ":";
+
+  installPhase = ''
+    mkdir -p $out/bin
+    echo "$shellHook" > $out/bin/darwin-installer
+    chmod +x $out/bin/darwin-installer
+  '';
+
+  shellHook = ''
+    #!/usr/bin/env bash
+    set -e
+
+    export nix=${nix}
+
+    config=$(nix-instantiate --eval -E '<darwin-config>' 2> /dev/null || echo "$HOME/.nixpkgs/darwin-configuration.nix")
+    if ! test -f "$config"; then
+      echo "copying example configuration.nix" >&2
+      mkdir -p "$HOME/.nixpkgs"
+      cp "${toString ../../modules/examples/simple.nix}" "$config"
+    fi
+
+    export NIX_PATH=${nixPath}
+    system=$($nix/bin/nix-build '<darwin>' -I "user-darwin-config=$config" -A system --no-out-link)
+    export PATH=$system/sw/bin:$PATH
+
+    darwin-rebuild switch -I "user-darwin-config=$config"
+
+    echo >&2
+    echo "    Open '$config' to get started." >&2
+    echo "    See the README for more information: https://github.com/LnL7/nix-darwin/blob/master/README.md" >&2
+    echo >&2
+    echo "    Don't forget to start a new shell or source /etc/static/bashrc." >&2
+    echo >&2
+    exit
+  '';
+}
diff --git a/pkgs/darwin-installer/profile.patch b/pkgs/darwin-installer/profile.patch
new file mode 100644
index 00000000..a9453ed5
--- /dev/null
+++ b/pkgs/darwin-installer/profile.patch
@@ -0,0 +1,14 @@
+diff --git a/profile b/profile
+index 3748e3b..36ad2cd 100644
+--- a/profile
++++ b/profile
+@@ -7,9 +7,3 @@ fi
+ if [ "${BASH-no}" != "no" ]; then
+ 	[ -r /etc/bashrc ] && . /etc/bashrc
+ fi
+-
+-# Nix
+-if [ -e '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh' ]; then
+-  . '/nix/var/nix/profiles/default/etc/profile.d/nix-daemon.sh'
+-fi
+-# End Nix