Merge remote-tracking branch 'cd/master'

31 files changed, 611 insertions, 394 deletions

diff --git a/Makefile b/Makefile
index 3727793e8..552e6e0fd 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,8 @@
 #
 # usage:
-#		make system=foo
-#		make systems='foo bar'
+#		make infest system=foo [target=bar]
+#		make [deploy] system=foo [target=bar]
+#		make [deploy] systems='foo bar'
 #		make eval get=tv.wu.config.time.timeZone [filter=json]
 #
 
@@ -11,6 +12,7 @@
 ifdef systems
 $(systems):
 	@
+	unset target
 	parallel \
 		--line-buffer \
 		-j0 \
@@ -20,7 +22,7 @@ $(systems):
 else ifdef system
 .PHONY: deploy infest
 deploy infest:;@
-	export get=$$LOGNAME.${system}.config.krebs.build.scripts.$@
+	export get=krebs.$@
 	export filter=json
 	make -s eval | sh
 
@@ -39,8 +41,11 @@ endif
 		--eval \
 		-A "$$get" \
 		'<stockholm>' \
-		--argstr user-name "$$LOGNAME" \
-		--argstr host-name "$$HOSTNAME" \
+		--argstr current-date "$$(date -Is)" \
+		--argstr current-host-name "$$HOSTNAME" \
+		--argstr current-user-name "$$LOGNAME" \
+		$${system+--argstr system "$$system"} \
+		$${target+--argstr target "$$target"} \
 		| filter
 else
 $(error unbound variable: system[s])
diff --git a/default.nix b/default.nix
index 1c3341ba7..c6a635c29 100644
--- a/default.nix
+++ b/default.nix
@@ -1,36 +1,34 @@
-{ user-name, host-name }:
+{ current-date
+, current-host-name
+, current-user-name
+}:
 
 let
   lib = import <nixpkgs/lib>;
 
   krebs-modules-path = ./krebs/3modules;
   krebs-pkgs-path = ./krebs/5pkgs;
-  user-modules-path = ./. + "/${user-name}/3modules";
-  user-pkgs-path = ./. + "/${user-name}/5pkgs";
+  user-modules-path = ./. + "/${current-user-name}/3modules";
+  user-pkgs-path = ./. + "/${current-user-name}/5pkgs";
 
   out =
-    (lib.mapAttrs (k: v: mk-namespace (./. + "/${k}"))
-      (lib.filterAttrs
-        (k: v: !lib.hasPrefix "." k && v == "directory" &&
-          builtins.pathExists (./. + "/${k}/1systems"))
-        (builtins.readDir ./.)));
+    lib.mapAttrs (_: builtins.getAttr "main")
+      (lib.filterAttrs (_: builtins.hasAttr "main")
+        (lib.mapAttrs
+          (k: v:
+            if lib.hasPrefix "." k || v != "directory" then
+              {}
+            else if builtins.pathExists (./. + "/${k}/default.nix") then
+              { main = import (./. + "/${k}"); }
+            else if builtins.pathExists (./. + "/${k}/1systems") then
+              { main = mk-namespace (./. + "/${k}"); }
+            else
+              {})
+          (builtins.readDir ./.)));
 
   eval = path: import <nixpkgs/nixos/lib/eval-config.nix> {
     system = builtins.currentSystem;
     modules = [
-      ({ config, ... }:
-        with import ./krebs/4lib { inherit lib; };
-        {
-          options.krebs.exec.host = mkOption {
-            type = types.host;
-            default = config.krebs.hosts.${host-name};
-          };
-          options.krebs.exec.user = mkOption {
-            type = types.user;
-            default = config.krebs.users.${user-name};
-          };
-        }
-      )
       path
       krebs-modules-path
       user-modules-path
diff --git a/krebs/3modules/build.nix b/krebs/3modules/build.nix
new file mode 100644
index 000000000..57495ea69
--- /dev/null
+++ b/krebs/3modules/build.nix
@@ -0,0 +1,72 @@
+{ config, lib, ... }:
+
+with import ../4lib { inherit lib; };
+
+let
+  target = config.krebs.build // { user.name = "root"; };
+
+  out = {
+    # TODO deprecate krebs.build.host
+    options.krebs.build.host = mkOption {
+      type = types.host;
+    };
+
+    # TODO make krebs.build.profile shell safe
+    options.krebs.build.profile = mkOption {
+      type = types.str;
+      default = "/nix/var/nix/profiles/system";
+    };
+
+    # TODO make krebs.build.target.host :: host
+    options.krebs.build.target = mkOption {
+      type = with types; nullOr str;
+      default = null;
+    };
+
+    # TODO deprecate krebs.build.user
+    options.krebs.build.user = mkOption {
+      type = types.user;
+    };
+
+    options.krebs.build.source.dir = mkOption {
+      type = types.attrsOf (types.submodule ({ config, ... }: {
+        options = {
+          host = mkOption {
+            type = types.host;
+          };
+          path = mkOption {
+            type = types.str;
+          };
+          target-path = mkOption {
+            type = types.str;
+            default = "/root/${config._module.args.name}";
+          };
+          url = mkOption {
+            type = types.str;
+            default = "file://${config.host.name}${config.path}";
+          };
+        };
+      }));
+      default = {};
+    };
+
+    options.krebs.build.source.git = mkOption {
+      type = with types; attrsOf (submodule ({ config, ... }: {
+        options = {
+          url = mkOption {
+            type = types.str; # TODO must be shell safe
+          };
+          rev = mkOption {
+            type = types.str;
+          };
+          target-path = mkOption {
+            type = types.str;
+            default = "/root/${config._module.args.name}";
+          };
+        };
+      }));
+      default = {};
+    };
+  };
+
+in out
diff --git a/krebs/3modules/build/default.nix b/krebs/3modules/build/default.nix
deleted file mode 100644
index 6097a7b5d..000000000
--- a/krebs/3modules/build/default.nix
+++ /dev/null
@@ -1,309 +0,0 @@
-{ config, lib, ... }:
-
-with import ../../4lib { inherit lib; };
-
-let
-  target = config.krebs.build // { user.name = "root"; };
-
-  out = {
-    # TODO deprecate krebs.build.host
-    options.krebs.build.host = mkOption {
-      type = types.host;
-    };
-
-    # TODO make krebs.build.profile shell safe
-    options.krebs.build.profile = mkOption {
-      type = types.str;
-      default = "/nix/var/nix/profiles/system";
-    };
-
-    # TODO make krebs.build.target.host :: host
-    options.krebs.build.target = mkOption {
-      type = with types; nullOr str;
-      default = null;
-    };
-
-    # TODO deprecate krebs.build.user
-    options.krebs.build.user = mkOption {
-      type = types.user;
-    };
-
-    options.krebs.build.scripts.init = lib.mkOption {
-      type = lib.types.str;
-      default =
-        let
-          inherit (config.krebs.build) host;
-        in
-        ''
-          #! /bin/sh
-          set -efu
-
-          hostname=${host.name}
-          secrets_dir=${config.krebs.build.source.dir.secrets.path}
-          key_type=ed25519
-          key_file=$secrets_dir/ssh.id_$key_type
-          key_comment=$hostname
-
-          if test -e "$key_file"; then
-            echo "Warning: privkey already exists: $key_file" >&2
-          else
-            ssh-keygen \
-                -C "$key_comment" \
-                -t "$key_type" \
-                -f "$key_file" \
-                -N ""
-            rm "$key_file.pub"
-          fi
-
-          pubkey=$(ssh-keygen -y -f "$key_file")
-
-          cat<<EOF
-          # put following into config.krebs.hosts.$hostname:
-          ssh.pubkey = $(echo $pubkey | jq -R .);
-          EOF
-        '';
-    };
-
-    options.krebs.build.scripts.deploy = lib.mkOption {
-      type = lib.types.str;
-      default = ''
-        set -efu
-        (${config.krebs.build.scripts._source})
-        ${ssh-target ''
-          ${config.krebs.build.scripts._nix-env}
-          ${config.krebs.build.profile}/bin/switch-to-configuration switch
-        ''}
-        echo OK
-      '';
-    };
-
-    options.krebs.build.scripts.infest = lib.mkOption {
-      type = lib.types.str;
-      default = ''
-        set -efu
-
-        export RSYNC_RSH; RSYNC_RSH="$(type -p ssh) \
-          -o 'HostName ${target.host.infest.addr}' \
-          -o 'Port ${toString target.host.infest.port}' \
-        "
-        ssh() {
-          eval "$RSYNC_RSH \"\$@\""
-        }
-
-        ${ssh-target ''
-          ${readFile ./infest/prepare.sh}
-          ${readFile ./infest/install-nix.sh}
-        ''}
-
-        (${config.krebs.build.scripts._source})
-
-        ${ssh-target ''
-          export PATH; PATH=/root/.nix-profile/bin:$PATH
-
-          src=$(type -p nixos-install)
-          cat_src() {
-            sed < "$src" "$(
-              { sed < "$src" -n '
-                    /^if ! test -e "\$mountPoint\/\$NIXOS_CONFIG/,/^fi$/=
-                    /^nixpkgs=/=
-                    /^NIX_PATH=/,/^$/{/./=}
-
-                    # Disable: Copy the NixOS/Nixpkgs sources to the target as
-                    # the initial contents of the NixOS channel.
-                    /^srcs=/,/^ln -sfn /=
-                  '
-              } | sed 's:$:s/^/#krebs#/:'
-            )"
-          }
-
-          # Location to insert config.krebs.build.scripts._nix-env
-          i=$(sed -n '/^echo "building the system configuration/=' "$src")
-
-          {
-            cat_src | sed -n "1,$i{p}"
-            cat ${doc config.krebs.build.scripts._nix-env}
-            cat_src | sed -n "$i,\''${$i!p}"
-          } > nixos-install
-          chmod +x nixos-install
-
-          # Wrap inserted config.krebs.build.scripts._nix-env into chroot.
-          nix_env=$(cat_src | sed -n '
-            s:.*\(/nix/store/[a-z0-9]*-nix-[0-9.]\+/bin/nix-env\).*:\1:p;T;q
-          ')
-          echo nix-env is $nix_env
-          sed -i '
-            s:^nix-env:chroot $mountPoint '"$nix_env"':
-          ' nixos-install
-
-          ./nixos-install
-
-          ${readFile ./infest/finalize.sh}
-        ''}
-      '';
-    };
-
-    options.krebs.build.scripts._nix-env = lib.mkOption {
-      type = lib.types.str;
-      default = ''
-        set -efu
-        NIX_PATH=${config.krebs.build.source.NIX_PATH} \
-        nix-env \
-          -f '<stockholm>' \
-          -Q \
-          --argstr user-name ${config.krebs.exec.user.name} \
-          --argstr host-name ${target.host.name} \
-          --profile ${config.krebs.build.profile} \
-          --set \
-          -A ${lib.escapeShellArg (lib.concatStringsSep "." [
-                config.krebs.build.user.name
-                config.krebs.build.host.name
-                "system"
-              ])}
-      '';
-    };
-
-    options.krebs.build.scripts._source = lib.mkOption {
-      type = lib.types.str;
-      default = ''
-        set -efu
-        ${
-          lib.concatStringsSep "\n"
-            (lib.mapAttrsToList
-              (name: { scripts, url, ... }: "(${scripts._source})")
-              (config.krebs.build.source.dir //
-               config.krebs.build.source.git))
-        }
-      '';
-    };
-
-    options.krebs.build.source.NIX_PATH = mkOption {
-      type = types.str;
-      default =
-        lib.concatStringsSep ":"
-          (lib.mapAttrsToList (name: _: "${name}=/root/${name}")
-            (config.krebs.build.source.dir //
-             config.krebs.build.source.git));
-    };
-
-    options.krebs.build.source.dir = mkOption {
-      type =
-        let
-          exec = config.krebs.exec;
-        in
-        types.attrsOf (types.submodule ({ config, ... }:
-          let
-            url = "file://${config.host.name}${config.path}";
-
-            can-link = config.host.name == target.host.name;
-            can-push = config.host.name == exec.host.name;
-
-            push-method = ''
-              rsync \
-                --exclude .git \
-                --exclude .graveyard \
-                --exclude old \
-                --exclude tmp \
-                --rsync-path='mkdir -p ${config.target-path} && rsync' \
-                --delete-excluded \
-                -vrLptgoD \
-                ${config.path}/ \
-                ${target.user.name}@${target.host.name}:${config.target-path}
-            '';
-          in
-          {
-            options = {
-              host = mkOption {
-                type = types.host;
-                description = ''
-                define the host where the directory is stored on.
-                XXX: currently it is just used to check if rsync is working,
-                     becomes part of url
-                '';
-              };
-              path = mkOption {
-                type = types.str;
-              };
-              scripts._source = mkOption {
-                type = types.str;
-                default =
-                  #if can-link then link-method else
-                  if can-push then push-method else
-                  throw "cannot source ${url}";
-              };
-              target-path = mkOption {
-                type = types.str;
-                default = "/root/${config._module.args.name}";
-              };
-              url = mkOption {
-                type = types.str;
-                default = "file://${config.host.name}${config.path}";
-              };
-            };
-          }
-        ));
-      default = {};
-    };
-
-    options.krebs.build.source.git = mkOption {
-      type =
-        let
-          target = config.krebs.build // { user.name = "root"; };
-        in
-        with types; attrsOf (submodule ({ config, ... }:
-          {
-            options = {
-              url = mkOption {
-                type = types.str; # TODO must be shell safe
-              };
-              rev = mkOption {
-                type = types.str;
-              };
-              scripts._source = mkOption {
-                type = types.str;
-                default = ssh-target ''
-                  mkdir -p ${config.target-path}
-                  cd ${config.target-path}
-                  if ! test -e .git; then
-                    git init
-                  fi
-                  if ! cur_url=$(git config remote.origin.url 2>/dev/null); then
-                    git remote add origin ${config.url}
-                  elif test "$cur_url" != ${config.url}; then
-                    git remote set-url origin ${config.url}
-                  fi
-                  if test "$(git rev-parse --verify HEAD 2>/dev/null)" != ${config.rev}; then
-                    git fetch origin
-                    git checkout ${config.rev} -- .
-                    git checkout -q ${config.rev}
-                    git submodule init
-                    git submodule update
-                  fi
-                  git clean -dxf
-                '';
-              };
-              target-path = mkOption {
-                type = types.str;
-                default = "/root/${config._module.args.name}";
-              };
-            };
-          }
-      ));
-      default = {};
-    };
-  };
-
-  doc = s:
-    let b = "EOF${hashString "sha256" s}"; in
-    ''
-    <<\${b}
-    ${s}
-    ${b}
-    '';
-
-  ssh-target = script:
-    "ssh root@${target.host.name} -T ${doc ''
-      set -efu
-      ${script}
-    ''}";
-
-in out
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index a1ce2ad6c..622432dab 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -6,7 +6,7 @@ let
 
   out = {
     imports = [
-      ./build
+      ./build.nix
       ./exim-retiolum.nix
       ./exim-smarthost.nix
       ./github-hosts-sync.nix
@@ -143,7 +143,7 @@ let
         dc = "lass"; #dc = "cac";
         nets = rec {
           internet = {
-            addrs4 = ["162.248.8.63"];
+            addrs4 = ["104.233.84.57"];
             aliases = [
               "echelon.internet"
             ];
@@ -158,12 +158,42 @@ let
             ];
             tinc.pubkey = ''
               -----BEGIN RSA PUBLIC KEY-----
-              MIIBCgKCAQEA92ybhDahtGybpAkUNlG5Elxw05MVY4Pg7yK0dQugB4nVq+pnmi78
-              DOMeIciecMHmJM8n9UlUU0eWZVCgHeVd23d6J0hTHCv24p24uHEGGy7XlO/dPJ6A
-              IjROYU0l8c03pipdJ3cDBx6riArSglwmZJ7xH/Iw0BUhRZrPqbtijY7EcG2wc+8K
-              N9N9mBofVMl4EcBiDR/eecK+ro8OkeOmYPtYgFJLvxTYXiPIhOxMAlkOY2fpin/t
-              cgFLUFuN4ag751XjjcNpVovVq95vdg+VhKrrNVWZjJt03owW81BzoryY6CD2kIPq
-              UxK89zEdeYOUT7AxaT/5V5v41IvGFZxCzwIDAQAB
+              MIIBCgKCAQEAuscWOYdHu0bpWacvwTNd6bcmrAQ0YFxJWHZF8kPZr+bMKIhnXLkJ
+              oJheENIM6CA9lQQQFUxh2P2pxZavW5rgVlJxIKeiB+MB4v6ZO60LmZgpCsWGD/dX
+              MipM2tLtQxYhvLJIJxEBWn3rxIgeEnCtZsH1KLWyLczb+QpvTjMJ4TNh1nEBPE/f
+              4LUH1JHaGhcaHl2dLemR9wnnDIjmSj0ENJp2al+hWnIggcA/Zp0e4b86Oqbbs5wA
+              n++n5j971cTrBdA89nJDYOEtepisglScVRbgLqJG81lDA+n24RWFynn+U3oD/L8p
+              do+kxlwZUEDRbPU4AO5L+UeIbimsuIfXiQIDAQAB
+              -----END RSA PUBLIC KEY-----
+            '';
+          };
+        };
+      };
+      fastpoke = {
+        dc = "lass"; #dc = "cac";
+        nets = rec {
+          internet = {
+            addrs4 = ["193.22.164.36"];
+            aliases = [
+              "fastpoke.internet"
+            ];
+          };
+          retiolum = {
+            via = internet;
+            addrs4 = ["10.243.253.152"];
+            addrs6 = ["42:422a:194f:ff3b:e196:2f82:5cf5:bc00"];
+            aliases = [
+              "fastpoke.retiolum"
+              "cgit.fastpoke.retiolum"
+            ];
+            tinc.pubkey = ''
+              -----BEGIN RSA PUBLIC KEY-----
+              MIIBCgKCAQEAs4p5xsQYx06v+OkUbc09K6voFAbkvO66QdFoM71E10XyCeLP6iuq
+              DaIOFN4GrPR36pgyjqtJ+62G9uR+WsB/y14eio1p1ivDWgcpt5soOZAH5zVRRD9O
+              FBDlgVNwIJ6stMHy6OenEKWsfEiZRN3XstnqAqyykzjddglth1tJntn6kbZehzNQ
+              ezfIyN4XgaX2fhSu+UnAyLcV8wWnF9cMABjz7eKcSmRJgtG4ZiuDkbgiiEew7+pB
+              EPqOVQ80lJvzQKgO4PmVoAjD9A+AHnmLJNPDQQi8nIVilGCT60IX+XT1rt85Zpdy
+              rEaeriw/qsVJnberAhDAdQYYuM1ai2H5swIDAQAB
               -----END RSA PUBLIC KEY-----
             '';
           };
@@ -568,10 +598,9 @@ let
       mkdir = rec {
         cores = 1;
         dc = "tv"; #dc = "cac";
-        infest.addr = head nets.internet.addrs4;
         nets = rec {
           internet = {
-            addrs4 = ["104.233.84.173"];
+            addrs4 = ["104.233.84.215"];
             aliases = [
               "mkdir.internet"
             ];
@@ -655,7 +684,6 @@ let
       rmdir = rec {
         cores = 1;
         dc = "tv"; #dc = "cac";
-        infest.addr = head nets.internet.addrs4;
         nets = rec {
           internet = {
             addrs4 = ["104.233.84.70"];
diff --git a/krebs/3modules/build/infest/finalize.sh b/krebs/4lib/infest/finalize.sh
index ced5a4d4d..ced5a4d4d 100644
--- a/krebs/3modules/build/infest/finalize.sh
+++ b/krebs/4lib/infest/finalize.sh
diff --git a/krebs/3modules/build/infest/install-nix.sh b/krebs/4lib/infest/install-nix.sh
index 88c8c3e1e..88c8c3e1e 100644
--- a/krebs/3modules/build/infest/install-nix.sh
+++ b/krebs/4lib/infest/install-nix.sh
diff --git a/krebs/3modules/build/infest/prepare.sh b/krebs/4lib/infest/prepare.sh
index 07c00c3a5..07c00c3a5 100644
--- a/krebs/3modules/build/infest/prepare.sh
+++ b/krebs/4lib/infest/prepare.sh
diff --git a/krebs/4lib/shell.nix b/krebs/4lib/shell.nix
index 2a6da5c16..5910adacc 100644
--- a/krebs/4lib/shell.nix
+++ b/krebs/4lib/shell.nix
@@ -6,7 +6,7 @@ with lib;
 rec {
   escape =
     let
-      isSafeChar = c: match "[-./0-9_a-zA-Z]" c != null;
+      isSafeChar = c: match "[-+./0-9:=A-Z_a-z]" c != null;
     in
     stringAsChars (c:
       if isSafeChar c then c
diff --git a/krebs/4lib/types.nix b/krebs/4lib/types.nix
index 0aa594fb1..039f803ef 100644
--- a/krebs/4lib/types.nix
+++ b/krebs/4lib/types.nix
@@ -31,10 +31,13 @@ types // rec {
       infest = {
         addr = mkOption {
           type = str;
+          apply = trace "Obsolete option `krebs.hosts.${config.name}.infest.addr' is used.  It was replaced by the `target' argument to `make` or `get`.  See Makefile for more information.";
         };
         port = mkOption {
           type = int;
           default = 22;
+          # TODO replacement: allow target with port, SSH-style: [lol]:666
+          apply = trace "Obsolete option `krebs.hosts.${config.name}.infest.port' is used.  It's gone without replacement.";
         };
       };
 
diff --git a/krebs/5pkgs/get/default.nix b/krebs/5pkgs/get/default.nix
index e2591db73..20bbfd014 100644
--- a/krebs/5pkgs/get/default.nix
+++ b/krebs/5pkgs/get/default.nix
@@ -1,12 +1,12 @@
 { coreutils, gnugrep, gnused, fetchgit, jq, nix, stdenv, ... }:
 
 stdenv.mkDerivation {
-  name = "get-1.1.1";
+  name = "get-1.3.0";
 
   src = fetchgit {
     url = http://cgit.cd.retiolum/get;
-    rev = "e64826a4f5f74cbaa895e538b97d0e523e9709f9";
-    sha256 = "4d1aa07bba52f697cf7aa7ad1b02b9ff41598dfea83c578e77b8d81e3e8830d2";
+    rev = "fbe8f8d12ede9762fceb15b9944b69a4ee6331eb";
+    sha256 = "bcdf036f8b5d1467285d0998aeac7e48280adfb9e1278f9f424c9c8b5e6ed8fa";
   };
 
   phases = [
diff --git a/krebs/Zhosts/cloudkrebs b/krebs/Zhosts/cloudkrebs
index ed46a36bd..3886371ff 100644
--- a/krebs/Zhosts/cloudkrebs
+++ b/krebs/Zhosts/cloudkrebs
@@ -1,4 +1,4 @@
-Address = 167.88.34.190
+Address = 104.167.113.104
 Subnet = 10.243.206.102
 Subnet = 42:941e:2816:35f4:5c5e:206b:3f0b:f762
 
diff --git a/krebs/Zhosts/echelon b/krebs/Zhosts/echelon
index 9d1c324fd..de4366875 100644
--- a/krebs/Zhosts/echelon
+++ b/krebs/Zhosts/echelon
@@ -1,12 +1,12 @@
-Address = 168.235.156.81
+Address = 104.233.84.57
 Subnet = 10.243.206.103
 Subnet = 42:941e:2816:35f4:5c5e:206b:3f0b:f763
 
 -----BEGIN RSA PUBLIC KEY-----
-MIIBCgKCAQEA92ybhDahtGybpAkUNlG5Elxw05MVY4Pg7yK0dQugB4nVq+pnmi78
-DOMeIciecMHmJM8n9UlUU0eWZVCgHeVd23d6J0hTHCv24p24uHEGGy7XlO/dPJ6A
-IjROYU0l8c03pipdJ3cDBx6riArSglwmZJ7xH/Iw0BUhRZrPqbtijY7EcG2wc+8K
-N9N9mBofVMl4EcBiDR/eecK+ro8OkeOmYPtYgFJLvxTYXiPIhOxMAlkOY2fpin/t
-cgFLUFuN4ag751XjjcNpVovVq95vdg+VhKrrNVWZjJt03owW81BzoryY6CD2kIPq
-UxK89zEdeYOUT7AxaT/5V5v41IvGFZxCzwIDAQAB
+MIIBCgKCAQEAuscWOYdHu0bpWacvwTNd6bcmrAQ0YFxJWHZF8kPZr+bMKIhnXLkJ
+oJheENIM6CA9lQQQFUxh2P2pxZavW5rgVlJxIKeiB+MB4v6ZO60LmZgpCsWGD/dX
+MipM2tLtQxYhvLJIJxEBWn3rxIgeEnCtZsH1KLWyLczb+QpvTjMJ4TNh1nEBPE/f
+4LUH1JHaGhcaHl2dLemR9wnnDIjmSj0ENJp2al+hWnIggcA/Zp0e4b86Oqbbs5wA
+n++n5j971cTrBdA89nJDYOEtepisglScVRbgLqJG81lDA+n24RWFynn+U3oD/L8p
+do+kxlwZUEDRbPU4AO5L+UeIbimsuIfXiQIDAQAB
 -----END RSA PUBLIC KEY-----
diff --git a/krebs/default.nix b/krebs/default.nix
new file mode 100644
index 000000000..0ec4c6079
--- /dev/null
+++ b/krebs/default.nix
@@ -0,0 +1,263 @@
+{ current-date
+, current-host-name
+, current-user-name
+}@current: rec {
+
+  deploy =
+    { system ? current-host-name
+    , target ? system
+    }@args: let
+      config = lib.get-config system;
+    in ''
+      #! /bin/sh
+      # ${current-date} ${current-user-name}@${current-host-name}
+      # krebs.deploy
+      set -efu
+      (${lib.populate args})
+      ${lib.rootssh target ''
+        ${lib.install args}
+        ${config.krebs.build.profile}/bin/switch-to-configuration switch
+      ''}
+      echo OK
+    '';
+
+  infest =
+    { system ? current-host-name
+    , target ? system
+    }@args: let
+    in ''
+      #! /bin/sh
+      # ${current-date} ${current-user-name}@${current-host-name}
+      # krebs.infest
+      set -efu
+
+      # XXX type -p is non-standard
+      #export RSYNC_RSH; RSYNC_RSH="$(type -p ssh) \
+      #  -o 'HostName $ {target.host.infest.addr}' \
+      #  -o 'Port $ {toString target.host.infest.port}' \
+      #"
+      #ssh() {
+      #  eval "$RSYNC_RSH \"\$@\""
+      #}
+
+      ${lib.rootssh target ''
+        ${builtins.readFile ./4lib/infest/prepare.sh}
+        ${builtins.readFile ./4lib/infest/install-nix.sh}
+      ''}
+
+      (${lib.populate args})
+
+      ${lib.rootssh target ''
+        export PATH; PATH=/root/.nix-profile/bin:$PATH
+
+        src=$(type -p nixos-install)
+        cat_src() {
+          sed < "$src" "$(
+            { sed < "$src" -n '
+                  /^if ! test -e "\$mountPoint\/\$NIXOS_CONFIG/,/^fi$/=
+                  /^nixpkgs=/=
+                  /^NIX_PATH=/,/^$/{/./=}
+
+                  # Disable: Copy the NixOS/Nixpkgs sources to the target as
+                  # the initial contents of the NixOS channel.
+                  /^srcs=/,/^ln -sfn /=
+                '
+            } | sed 's:$:s/^/#krebs#/:'
+          )"
+        }
+
+        # Location to insert lib.install
+        i=$(sed -n '/^echo "building the system configuration/=' "$src")
+
+        {
+          cat_src | sed -n "1,$i{p}"
+          cat ${lib.doc (lib.install args)}
+          cat_src | sed -n "$i,\''${$i!p}"
+        } > nixos-install
+        chmod +x nixos-install
+
+        ## Wrap inserted lib.install into chroot.
+        #nix_env=$(cat_src | sed -n '
+        #  s:.*\(/nix/store/[a-z0-9]*-nix-[0-9.]\+/bin/nix-env\).*:\1:p;T;q
+        #')
+        #echo nix-env is $nix_env
+        #sed -i '
+        #  s:^nix-env:chroot $mountPoint '"$nix_env"':
+        #' nixos-install
+
+        ./nixos-install
+
+        ${builtins.readFile ./4lib/infest/finalize.sh}
+      ''}
+    '';
+
+  init =
+    { system ? current-host-name
+    }@args: let
+      config = lib.get-config system;
+    in ''
+      #! /bin/sh
+      # ${current-date} ${current-user-name}@${current-host-name}
+      # krebs.init
+      set -efu
+
+      system=${lib.shell.escape system}
+      secrets_dir=${config.krebs.build.source.dir.secrets.path}
+      key_type=ed25519
+      key_file=$secrets_dir/ssh.id_$key_type
+      key_comment=$system
+
+      if test -e "$key_file"; then
+        echo "Warning: privkey already exists: $key_file" >&2
+      else
+        ssh-keygen \
+            -C "$key_comment" \
+            -t "$key_type" \
+            -f "$key_file" \