os-release: use <stockholm-version>

jeschli/source.nix

@@ -4,6 +4,11 @@ host@{ name, secure ? false, override ? {} }: let
               then "buildbot"
               else "jeschli";
   _file = <stockholm> + "/jeschli/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -17,6 +22,7 @@ in
         jeschli = "${getEnv "HOME"}/secrets/${name}";
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     }
     override
   ]

krebs/3modules/os-release.nix

@@ -5,7 +5,11 @@ let
   nixos-version = "${nixos-version-id} (${config.system.nixosCodeName})";
   nixos-pretty-name = "NixOS ${nixos-version}";
 
-  stockholm-version-id = maybeEnv "STOCKHOLM_VERSION" "unknown";
+  stockholm-version-id = let
+    eval = tryEval (removeSuffix "\n" (readFile <stockholm-version>));
+  in
+    if eval.success then eval.value else "unknown";
+
   stockholm-version = "${stockholm-version-id}";
   stockholm-pretty-name = "stockholm ${stockholm-version}";
 

krebs/5pkgs/simple/stockholm/default.nix

@@ -216,7 +216,6 @@
   init.env = pkgs.writeText "init.env" /* sh */ ''
 
     export HOSTNAME="$(${pkgs.nettools}/bin/hostname)"
-    export STOCKHOLM_VERSION="''${STOCKHOLM_VERSION-$(${cmds.get-version})}"
 
     export quiet
     export system
@@ -251,7 +250,6 @@
             "$target_user@$target_host" -p "$target_port" \
             cd "$target_path/stockholm" \; \
             NIX_PATH=$(${pkgs.quote}/bin/quote "$target_path") \
-            STOCKHOLM_VERSION=$(${pkgs.quote}/bin/quote "$STOCKHOLM_VERSION") \
             nix-shell --run "$(${pkgs.quote}/bin/quote "
               ${lib.concatStringsSep " " (lib.mapAttrsToList
                 (name: opt: /* sh */

krebs/source.nix

@@ -4,6 +4,11 @@ host@{ name, secure ? false, override ? {} }: let
               then "buildbot"
               else "krebs";
   _file = <stockholm> + "/krebs/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -16,6 +21,7 @@ in
         };
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
       nixpkgs.git = {
         url = https://github.com/NixOS/nixpkgs;
         ref = "c831224528cd6bfd49bfc2c18b9c5d9015651077"; # nixos-17.09 @ 2018-02-15

lass/source.nix

@@ -4,6 +4,11 @@ host@{ name, secure ? false, override ? {} }: let
               then "buildbot"
               else "lass";
   _file = <stockholm> + "/lass/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -17,6 +22,7 @@ in
         };
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     }
     override
   ]

makefu/source.nix

@@ -13,6 +13,11 @@ let
               then "buildbot"
               else "makefu";
   _file = <stockholm> + "/makefu/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
   # TODO: automate updating of this ref + cherry-picks
   ref = "51810e0"; # nixos-17.09 @ 2018-02-14
                    # + do_sqlite3 ruby: 55a952be5b5
@@ -42,6 +47,7 @@ in
       };
 
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     }
     (mkIf ( musnix ) {
       musnix.git = {

mv/source.nix

@@ -4,6 +4,11 @@ host@{ name, override ? {} }: let
               then "buildbot"
               else "mv";
   _file = <stockholm> + "/mv/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -18,6 +23,7 @@ in
         mv = "/home/mv/secrets/${name}";
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     }
     override
   ]

nin/source.nix

@@ -4,6 +4,11 @@ host@{ name, secure ? false }: let
               then "buildbot"
               else "nin";
   _file = <stockholm> + "/nin/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) {
     nixos-config.symlink = "stockholm/nin/1systems/${name}/config.nix";
@@ -12,6 +17,7 @@ in
       nin = "/home/nin/secrets/${name}";
     };
     stockholm.file = toString <stockholm>;
+    stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     nixpkgs.git = {
       url = https://github.com/nixos/nixpkgs;
       ref = "afe9649";

tv/source.nix

@@ -6,6 +6,11 @@ with import <stockholm/lib>;
 }@host: let
   builder = if dummy_secrets then "buildbot" else "tv";
   _file = <stockholm> + "/tv/1systems/${name}/source.nix";
+  pkgs = import <nixpkgs> {
+    overlays = map import [
+      <stockholm/krebs/5pkgs>
+    ];
+  };
 in
   evalSource (toString _file) [
     {
@@ -20,6 +25,7 @@ in
         tv = "/home/tv/secrets/${name}";
       };
       stockholm.file = toString <stockholm>;
+      stockholm-version.pipe = "${pkgs.stockholm}/bin/get-version";
     }
     (mkIf (builder == "tv") {
       secrets-common.file = "/home/tv/secrets/common";