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-rw-r--r--tools/nixery/build-image/build-image.nix (renamed from tools/nixery/build-registry-image.nix)4
-rw-r--r--tools/nixery/build-image/default.nix40
-rw-r--r--tools/nixery/build-image/go-deps.nix12
-rw-r--r--tools/nixery/build-image/group-layers.go (renamed from tools/nixery/group-layers/group-layers.go)0
-rw-r--r--tools/nixery/default.nix4
-rw-r--r--tools/nixery/server/default.nix14
-rw-r--r--tools/nixery/server/main.go8
7 files changed, 73 insertions, 9 deletions
diff --git a/tools/nixery/build-registry-image.nix b/tools/nixery/build-image/build-image.nix
index 255f1ca9b1d0..37156905fa38 100644
--- a/tools/nixery/build-registry-image.nix
+++ b/tools/nixery/build-image/build-image.nix
@@ -287,6 +287,6 @@ let
     pkgs = map (err: err.pkg) allContents.errors;
   };
 in writeText "manifest-output.json" (if (length allContents.errors) == 0
-  then toJSON (trace manifestOutput manifestOutput)
-  else toJSON (trace errorOutput errorOutput)
+  then toJSON manifestOutput
+  else toJSON errorOutput
 )
diff --git a/tools/nixery/build-image/default.nix b/tools/nixery/build-image/default.nix
new file mode 100644
index 000000000000..4962e07deee9
--- /dev/null
+++ b/tools/nixery/build-image/default.nix
@@ -0,0 +1,40 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This file builds the tool used to calculate layer distribution and
+# moves the files needed to call the Nix builds at runtime in the
+# correct locations.
+
+{ buildGoPackage, lib, nix, writeShellScriptBin }:
+
+let
+  group-layers = buildGoPackage {
+    name = "group-layers";
+    goDeps = ./go-deps.nix;
+    src = ./.;
+
+    goPackagePath = "github.com/google/nixery/group-layers";
+
+    meta = {
+      description = "Tool to group a set of packages into container image layers";
+      license = lib.licenses.asl20;
+      maintainers = [ lib.maintainers.tazjin ];
+    };
+  };
+
+  # Wrapper script which is called by the Nixery server to trigger an
+  # actual image build.
+in writeShellScriptBin "nixery-build-image" ''
+  exec ${nix}/bin/nix-build --show-trace --no-out-link "$@" ${./build-image.nix}
+''
diff --git a/tools/nixery/build-image/go-deps.nix b/tools/nixery/build-image/go-deps.nix
new file mode 100644
index 000000000000..235c3c4c6dbe
--- /dev/null
+++ b/tools/nixery/build-image/go-deps.nix
@@ -0,0 +1,12 @@
+# This file was generated by https://github.com/kamilchm/go2nix v1.3.0
+[
+  {
+    goPackagePath = "gonum.org/v1/gonum";
+    fetch = {
+      type = "git";
+      url = "https://github.com/gonum/gonum";
+      rev = "ced62fe5104b907b6c16cb7e575c17b2e62ceddd";
+      sha256 = "1b7q6haabnp53igpmvr6a2414yralhbrldixx4kbxxg1apy8jdjg";
+    };
+  }
+]
diff --git a/tools/nixery/group-layers/group-layers.go b/tools/nixery/build-image/group-layers.go
index 93f2e520ace9..93f2e520ace9 100644
--- a/tools/nixery/group-layers/group-layers.go
+++ b/tools/nixery/build-image/group-layers.go
diff --git a/tools/nixery/default.nix b/tools/nixery/default.nix
index fe5afdb8ed8b..7d201869dc90 100644
--- a/tools/nixery/default.nix
+++ b/tools/nixery/default.nix
@@ -25,6 +25,8 @@ rec {
   # data dependencies.
   nixery-server = callPackage ./server {};
 
+  # Implementation of the image building & layering logic
+  nixery-build-image = callPackage ./build-image {};
 
   # Use mdBook to build a static asset page which Nixery can then
   # serve. This is primarily used for the public instance at
@@ -37,7 +39,6 @@ rec {
   # In most cases, this will be the derivation a user wants if they
   # are installing Nixery directly.
   nixery-bin = writeShellScriptBin "nixery" ''
-    export NIX_BUILDER="${nixery-builder}"
     export WEB_DIR="${nixery-book}"
     exec ${nixery-server}/bin/nixery
   '';
@@ -84,6 +85,7 @@ rec {
       gnutar
       gzip
       nix
+      nixery-build-image
       nixery-launch-script
       openssh
     ];
diff --git a/tools/nixery/server/default.nix b/tools/nixery/server/default.nix
index 394d2b27b442..0d0c056a56f4 100644
--- a/tools/nixery/server/default.nix
+++ b/tools/nixery/server/default.nix
@@ -1,3 +1,17 @@
+# Copyright 2019 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 { buildGoPackage, lib }:
 
 buildGoPackage {
diff --git a/tools/nixery/server/main.go b/tools/nixery/server/main.go
index d20ede2eb587..3e015e8587fc 100644
--- a/tools/nixery/server/main.go
+++ b/tools/nixery/server/main.go
@@ -123,7 +123,6 @@ func signingOptsFromEnv() *storage.SignedURLOptions {
 type config struct {
 	bucket  string                    // GCS bucket to cache & serve layers
 	signing *storage.SignedURLOptions // Signing options to use for GCS URLs
-	builder string                    // Nix derivation for building images
 	port    string                    // Port on which to launch HTTP server
 	pkgs    *pkgSource                // Source for Nix package set
 }
@@ -208,16 +207,14 @@ func buildImage(ctx *context.Context, cfg *config, image *image, bucket *storage
 	}
 
 	args := []string{
-		"--no-out-link",
-		"--show-trace",
 		"--argstr", "name", image.name,
-		"--argstr", "packages", string(packages), cfg.builder,
+		"--argstr", "packages", string(packages),
 	}
 
 	if cfg.pkgs != nil {
 		args = append(args, "--argstr", "pkgSource", cfg.pkgs.renderSource(image.tag))
 	}
-	cmd := exec.Command("nix-build", args...)
+	cmd := exec.Command("nixery-build-image", args...)
 
 	outpipe, err := cmd.StdoutPipe()
 	if err != nil {
@@ -466,7 +463,6 @@ func getConfig(key, desc string) string {
 func main() {
 	cfg := &config{
 		bucket:  getConfig("BUCKET", "GCS bucket for layer storage"),
-		builder: getConfig("NIX_BUILDER", "Nix image builder code"),
 		port:    getConfig("PORT", "HTTP port"),
 		pkgs:    pkgSourceFromEnv(),
 		signing: signingOptsFromEnv(),