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-rw-r--r--nix/buildGo/default.nix91
-rw-r--r--nix/buildGo/example/default.nix5
-rw-r--r--nix/buildGo/external/default.nix50
-rw-r--r--nix/buildGo/proto.nix3
4 files changed, 84 insertions, 65 deletions
diff --git a/nix/buildGo/default.nix b/nix/buildGo/default.nix
index a2396dc3f770..0126a93d1621 100644
--- a/nix/buildGo/default.nix
+++ b/nix/buildGo/default.nix
@@ -4,8 +4,9 @@
 # buildGo provides Nix functions to build Go packages in the style of Bazel's
 # rules_go.
 
-{ pkgs ? import <nixpkgs> {}
-, ... }:
+{ pkgs ? import <nixpkgs> { }
+, ...
+}:
 
 let
   inherit (builtins)
@@ -40,7 +41,7 @@ let
 
   xFlags = x_defs: spaceOut (map (k: "-X ${k}=${x_defs."${k}"}") (attrNames x_defs));
 
-  pathToName = p: replaceStrings ["/"] ["_"] (toString p);
+  pathToName = p: replaceStrings [ "/" ] [ "_" ] (toString p);
 
   # Add an `overrideGo` attribute to a function result that works
   # similar to `overrideAttrs`, but is used specifically for the
@@ -52,49 +53,50 @@ let
   # High-level build functions
 
   # Build a Go program out of the specified files and dependencies.
-  program = { name, srcs, deps ? [], x_defs ? {} }:
-  let uniqueDeps = allDeps (map (d: d.gopkg) deps);
-  in runCommand name {} ''
-    ${go}/bin/go tool compile -o ${name}.a -trimpath=$PWD -trimpath=${go} ${includeSources uniqueDeps} ${spaceOut srcs}
-    mkdir -p $out/bin
-    export GOROOT_FINAL=go
-    ${go}/bin/go tool link -o $out/bin/${name} -buildid nix ${xFlags x_defs} ${includeLibs uniqueDeps} ${name}.a
-  '';
+  program = { name, srcs, deps ? [ ], x_defs ? { } }:
+    let uniqueDeps = allDeps (map (d: d.gopkg) deps);
+    in runCommand name { } ''
+      ${go}/bin/go tool compile -o ${name}.a -trimpath=$PWD -trimpath=${go} ${includeSources uniqueDeps} ${spaceOut srcs}
+      mkdir -p $out/bin
+      export GOROOT_FINAL=go
+      ${go}/bin/go tool link -o $out/bin/${name} -buildid nix ${xFlags x_defs} ${includeLibs uniqueDeps} ${name}.a
+    '';
 
   # Build a Go library assembled out of the specified files.
   #
   # This outputs both the sources and compiled binary, as both are
   # needed when downstream packages depend on it.
-  package = { name, srcs, deps ? [], path ? name, sfiles ? [] }:
-  let
-    uniqueDeps = allDeps (map (d: d.gopkg) deps);
-
-    # The build steps below need to be executed conditionally for Go
-    # assembly if the analyser detected any *.s files.
-    #
-    # This is required for several popular packages (e.g. x/sys).
-    ifAsm = do: lib.optionalString (sfiles != []) do;
-    asmBuild = ifAsm ''
-      ${go}/bin/go tool asm -trimpath $PWD -I $PWD -I ${go}/share/go/pkg/include -D GOOS_linux -D GOARCH_amd64 -gensymabis -o ./symabis ${spaceOut sfiles}
-      ${go}/bin/go tool asm -trimpath $PWD -I $PWD -I ${go}/share/go/pkg/include -D GOOS_linux -D GOARCH_amd64 -o ./asm.o ${spaceOut sfiles}
-    '';
-    asmLink = ifAsm "-symabis ./symabis -asmhdr $out/go_asm.h";
-    asmPack = ifAsm ''
-      ${go}/bin/go tool pack r $out/${path}.a ./asm.o
-    '';
-
-    gopkg = (runCommand "golib-${name}" {} ''
-      mkdir -p $out/${path}
-      ${srcList path (map (s: "${s}") srcs)}
-      ${asmBuild}
-      ${go}/bin/go tool compile -pack ${asmLink} -o $out/${path}.a -trimpath=$PWD -trimpath=${go} -p ${path} ${includeSources uniqueDeps} ${spaceOut srcs}
-      ${asmPack}
-    '') // {
-      inherit gopkg;
-      goDeps = uniqueDeps;
-      goImportPath = path;
-    };
-  in gopkg;
+  package = { name, srcs, deps ? [ ], path ? name, sfiles ? [ ] }:
+    let
+      uniqueDeps = allDeps (map (d: d.gopkg) deps);
+
+      # The build steps below need to be executed conditionally for Go
+      # assembly if the analyser detected any *.s files.
+      #
+      # This is required for several popular packages (e.g. x/sys).
+      ifAsm = do: lib.optionalString (sfiles != [ ]) do;
+      asmBuild = ifAsm ''
+        ${go}/bin/go tool asm -trimpath $PWD -I $PWD -I ${go}/share/go/pkg/include -D GOOS_linux -D GOARCH_amd64 -gensymabis -o ./symabis ${spaceOut sfiles}
+        ${go}/bin/go tool asm -trimpath $PWD -I $PWD -I ${go}/share/go/pkg/include -D GOOS_linux -D GOARCH_amd64 -o ./asm.o ${spaceOut sfiles}
+      '';
+      asmLink = ifAsm "-symabis ./symabis -asmhdr $out/go_asm.h";
+      asmPack = ifAsm ''
+        ${go}/bin/go tool pack r $out/${path}.a ./asm.o
+      '';
+
+      gopkg = (runCommand "golib-${name}" { } ''
+        mkdir -p $out/${path}
+        ${srcList path (map (s: "${s}") srcs)}
+        ${asmBuild}
+        ${go}/bin/go tool compile -pack ${asmLink} -o $out/${path}.a -trimpath=$PWD -trimpath=${go} -p ${path} ${includeSources uniqueDeps} ${spaceOut srcs}
+        ${asmPack}
+      '') // {
+        inherit gopkg;
+        goDeps = uniqueDeps;
+        goImportPath = path;
+      };
+    in
+    gopkg;
 
   # Build a tree of Go libraries out of an external Go source
   # directory that follows the standard Go layout and was not built
@@ -110,10 +112,10 @@ let
   };
 
   # Build a Go library out of the specified protobuf definition.
-  proto = { name, proto, path ? name, goPackage ? name, extraDeps ? [] }: (makeOverridable package) {
+  proto = { name, proto, path ? name, goPackage ? name, extraDeps ? [ ] }: (makeOverridable package) {
     inherit name path;
     deps = [ protoLibs.goProto.proto.gopkg ] ++ extraDeps;
-    srcs = lib.singleton (runCommand "goproto-${name}.pb.go" {} ''
+    srcs = lib.singleton (runCommand "goproto-${name}.pb.go" { } ''
       cp ${proto} ${baseNameOf proto}
       ${protobuf}/bin/protoc --plugin=${protoLibs.goProto.protoc-gen-go.gopkg}/bin/protoc-gen-go \
         --go_out=plugins=grpc,import_path=${baseNameOf path}:. ${baseNameOf proto}
@@ -124,7 +126,8 @@ let
   # Build a Go library out of the specified gRPC definition.
   grpc = args: proto (args // { extraDeps = [ protoLibs.goGrpc.gopkg ]; });
 
-in {
+in
+{
   # Only the high-level builder functions are exposed, but made
   # overrideable.
   program = makeOverridable program;
diff --git a/nix/buildGo/example/default.nix b/nix/buildGo/example/default.nix
index 99c0a7d79bd6..08da075e1818 100644
--- a/nix/buildGo/example/default.nix
+++ b/nix/buildGo/example/default.nix
@@ -8,7 +8,7 @@
 # users a quick introduction to how to use buildGo.
 
 let
-  buildGo = import ../default.nix {};
+  buildGo = import ../default.nix { };
 
   # Example use of buildGo.package, which creates an importable Go
   # package from the specified source files.
@@ -29,7 +29,8 @@ let
   # Example use of buildGo.program, which builds an executable using
   # the specified name and dependencies (which in turn must have been
   # created via buildGo.package etc.)
-in buildGo.program {
+in
+buildGo.program {
   name = "example";
 
   srcs = [
diff --git a/nix/buildGo/external/default.nix b/nix/buildGo/external/default.nix
index 6540faf04c36..f713783a58be 100644
--- a/nix/buildGo/external/default.nix
+++ b/nix/buildGo/external/default.nix
@@ -17,12 +17,12 @@ let
 
   inherit (pkgs) lib runCommand go jq ripgrep;
 
-  pathToName = p: replaceStrings ["/"] ["_"] (toString p);
+  pathToName = p: replaceStrings [ "/" ] [ "_" ] (toString p);
 
   # Collect all non-vendored dependencies from the Go standard library
   # into a file that can be used to filter them out when processing
   # dependencies.
-  stdlibPackages = runCommand "stdlib-pkgs.json" {} ''
+  stdlibPackages = runCommand "stdlib-pkgs.json" { } ''
     export HOME=$PWD
     export GOPATH=/dev/null
     ${go}/bin/go list std | \
@@ -45,20 +45,28 @@ let
   };
 
   mkset = path: value:
-    if path == [] then { gopkg = value; }
+    if path == [ ] then { gopkg = value; }
     else { "${head path}" = mkset (tail path) value; };
 
   last = l: elemAt l ((length l) - 1);
 
   toPackage = self: src: path: depMap: entry:
     let
-      localDeps = map (d: lib.attrByPath (d ++ [ "gopkg" ]) (
-        throw "missing local dependency '${lib.concatStringsSep "." d}' in '${path}'"
-      ) self) entry.localDeps;
-
-      foreignDeps = map (d: lib.attrByPath [ d.path ] (
-        throw "missing foreign dependency '${d.path}' in '${path}, imported at ${d.position}'"
-      ) depMap) entry.foreignDeps;
+      localDeps = map
+        (d: lib.attrByPath (d ++ [ "gopkg" ])
+          (
+            throw "missing local dependency '${lib.concatStringsSep "." d}' in '${path}'"
+          )
+          self)
+        entry.localDeps;
+
+      foreignDeps = map
+        (d: lib.attrByPath [ d.path ]
+          (
+            throw "missing foreign dependency '${d.path}' in '${path}, imported at ${d.position}'"
+          )
+          depMap)
+        entry.foreignDeps;
 
       args = {
         srcs = map (f: src + ("/" + f)) entry.files;
@@ -74,22 +82,28 @@ let
       binArgs = args // {
         name = (last ((lib.splitString "/" path) ++ entry.locator));
       };
-    in if entry.isCommand then (program binArgs) else (package libArgs);
+    in
+    if entry.isCommand then (program binArgs) else (package libArgs);
 
-in { src, path, deps ? [] }: let
+in
+{ src, path, deps ? [ ] }:
+let
   # Build a map of dependencies (from their import paths to their
   # derivation) so that they can be conditionally imported only in
   # sub-packages that require them.
-  depMap = listToAttrs (map (d: {
-    name = d.goImportPath;
-    value = d;
-  }) (map (d: d.gopkg) deps));
+  depMap = listToAttrs (map
+    (d: {
+      name = d.goImportPath;
+      value = d;
+    })
+    (map (d: d.gopkg) deps));
 
   name = pathToName path;
-  analysisOutput = runCommand "${name}-structure.json" {} ''
+  analysisOutput = runCommand "${name}-structure.json" { } ''
     ${analyser}/bin/analyser -path ${path} -source ${src} > $out
   '';
   analysis = fromJSON (readFile analysisOutput);
-in lib.fix(self: foldl' lib.recursiveUpdate {} (
+in
+lib.fix (self: foldl' lib.recursiveUpdate { } (
   map (entry: mkset entry.locator (toPackage self src path depMap entry)) analysis
 ))
diff --git a/nix/buildGo/proto.nix b/nix/buildGo/proto.nix
index 4bd3a572761d..6c37f758ced7 100644
--- a/nix/buildGo/proto.nix
+++ b/nix/buildGo/proto.nix
@@ -8,7 +8,8 @@
 
 let
   inherit (builtins) fetchGit map;
-in rec {
+in
+rec {
   goProto = external {
     path = "github.com/golang/protobuf";
     src = fetchGit {
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