Merge pull request #132626 from zowoq/tarsum

tarsum: init

pkgs/build-support/docker/default.nix

···
   callPackage,
   closureInfo,
   coreutils,
-  docker,
   e2fsprogs,
   fakeroot,
   findutils,
···
   moreutils,
   nix,
   pigz,
+  pkgs,
   rsync,
   runCommand,
   runtimeShell,
···
 
   # We need to sum layer.tar, not a directory, hence tarsum instead of nix-hash.
   # And we cannot untar it, because then we cannot preserve permissions etc.
-  tarsum = runCommand "tarsum" {
-    nativeBuildInputs = [ go ];
-  } ''
-    mkdir tarsum
-    cd tarsum
-
-    cp ${./tarsum.go} tarsum.go
-    export GOPATH=$(pwd)
-    export GOCACHE="$TMPDIR/go-cache"
-    export GO111MODULE=off
-    mkdir -p src/github.com/docker/docker/pkg
-    ln -sT ${docker.moby-src}/pkg/tarsum src/github.com/docker/docker/pkg/tarsum
-    go build
-
-    mkdir -p $out/bin
-
-    cp tarsum $out/bin/
-  '';
+  tarsum = pkgs.tarsum;
 
   # buildEnv creates symlinks to dirs, which is hard to edit inside the overlay VM
   mergeDrvs = {

pkgs/build-support/docker/tarsum.nix

···
+{ stdenv, go, docker, nixosTests }:
+
+stdenv.mkDerivation {
+  name = "tarsum";
+
+  nativeBuildInputs = [ go ];
+  disallowedReferences = [ go ];
+
+  dontUnpack = true;
+
+  CGO_ENABLED = 0;
+  GOFLAGS = "-trimpath";
+  GO111MODULE = "off";
+
+  buildPhase = ''
+    runHook preBuild
+    mkdir tarsum
+    cd tarsum
+    cp ${./tarsum.go} tarsum.go
+    export GOPATH=$(pwd)
+    export GOCACHE="$TMPDIR/go-cache"
+    mkdir -p src/github.com/docker/docker/pkg
+    ln -sT ${docker.moby-src}/pkg/tarsum src/github.com/docker/docker/pkg/tarsum
+    go build
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin
+    cp tarsum $out/bin/
+    runHook postInstall
+  '';
+
+  passthru = {
+    tests = {
+      dockerTools = nixosTests.docker-tools;
+    };
+  };
+
+  meta.platforms = go.meta.platforms;
+}

pkgs/top-level/all-packages.nix

···
   dockerTools = callPackage ../build-support/docker {
     writePython3 = buildPackages.writers.writePython3;
   };
+  tarsum = callPackage ../build-support/docker/tarsum.nix { };
 
   snapTools = callPackage ../build-support/snap { };