blob: e6531393db699cacf9c573385af0b0d0a47e383e (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
# buildGo provides Nix functions to build Go packages in the style of Bazel's
# rules_go.
#
# TODO(tazjin): Go through Bazel rules_go options and implement corresponding flags
# TODO(tazjin): Refactor to include /golang/protobuf/descriptor in goProto deps
{ pkgs, ... }@args:
let
inherit (builtins)
attrNames
baseNameOf
currentSystem
filter
isString
head
map
match
readDir
toFile
toPath
toString;
inherit (pkgs) bash lib go runCommand fetchFromGitHub protobuf;
# Helpers for low-level Go compiler invocations
spaceOut = lib.concatStringsSep " ";
includeDepSrc = dep: "-I ${dep}";
includeSources = deps: spaceOut (map includeDepSrc deps);
includeDepLib = dep: "-L ${dep}";
includeLibs = deps: spaceOut (map includeDepLib deps);
srcBasename = src: head (filter isString (match "([a-z0-9]{32}\-)?(.*\.go)" (baseNameOf src)));
srcCopy = path: src: "cp ${src} $out/${path}/${srcBasename src}";
srcList = path: srcs: lib.concatStringsSep "\n" (map (srcCopy path) srcs);
isGoFile = f: (match ".*\.go" f) != null;
isGoTest = f: (match ".*_test\.go" f) != null;
goFileFilter = k: v: (v == "regular") && (isGoFile k) && (!isGoTest k);
goFilesIn = dir:
let files = readDir dir;
goFiles = filter (f: goFileFilter f files."${f}") (attrNames files);
in map (f: dir + "/" + f) goFiles;
allDeps = deps: lib.unique (lib.flatten (deps ++ (map (d: d.goDeps) deps)));
# High-level build functions
# Build a Go program out of the specified files and dependencies.
program = { name, srcs, deps ? [] }:
let uniqueDeps = allDeps deps;
in runCommand name {} ''
${go}/bin/go tool compile -o ${name}.a -trimpath=$PWD ${includeSources uniqueDeps} ${spaceOut srcs}
mkdir -p $out/bin
${go}/bin/go tool link -o $out/bin/${name} ${includeLibs uniqueDeps} ${name}.a
'';
# Build a Go library assembled out of the specified files.
#
# This outputs both the sources and compiled binary, as both are
# needed when downstream packages depend on it.
package = { name, srcs, deps ? [], path ? name }:
let uniqueDeps = allDeps deps;
in (runCommand "golib-${name}" {} ''
mkdir -p $out/${path}
${srcList path (map (s: "${s}") srcs)}
${go}/bin/go tool compile -o $out/${path}.a -trimpath=$PWD -p ${path} ${includeSources uniqueDeps} ${spaceOut srcs}
'') // { goDeps = uniqueDeps; };
# Build a Go library out of the specified proto/gRPC file.
proto = { name, proto, path ? name }: package {
inherit name path;
deps = [ goProto ];
srcs = lib.singleton (runCommand "goproto-${name}.pb.go" {} ''
cp ${proto} ${baseNameOf proto}
${protobuf}/bin/protoc --plugin=${protocGo}/bin/protoc-gen-go \
--go_out=import_path=${baseNameOf path}:. ${baseNameOf proto}
mv *.pb.go $out
'');
};
# Protobuf & gRPC integration requires these dependencies:
proto-go-src = fetchFromGitHub {
owner = "golang";
repo = "protobuf";
rev = "ed6926b37a637426117ccab59282c3839528a700";
sha256 = "0fynqrim022x9xi2bivkw19npbz4316v4yr7mb677s9s36z4dc4h";
};
goProto =
let
protobuf = package {
name = "protobuf";
path = "github.com/golang/protobuf/proto";
srcs = filter
(f: (match "(.*)/pointer_reflect.go" f) == null)
(goFilesIn (toPath "${proto-go-src}/proto"));
};
type = name: package {
name = "ptypes-${name}";
path = "github.com/golang/protobuf/ptypes/${name}";
srcs = goFilesIn (toPath "${proto-go-src}/ptypes/${name}");
deps = [ protobuf ];
};
# descriptor = package {
# name = "descriptor";
# path = "github.com/golang/protobuf/descriptor";
# deps = [ protobuf ];
# srcs = goFilesIn (toPath "${proto-go-src}/descriptor");
# };
ptypes = package {
name = "ptypes";
path = "github.com/golang/protobuf/ptypes";
srcs = goFilesIn (toPath "${proto-go-src}/ptypes");
deps = map type [
"any"
"duration"
"empty"
"struct"
"timestamp"
"wrappers"
];
};
in protobuf // { goDeps = allDeps (protobuf.goDeps ++ [ ptypes ]); };
protocGo =
let
descriptor = package {
name = "descriptor";
path = "github.com/golang/protobuf/protoc-gen-go/descriptor";
srcs = goFilesIn (toPath "${proto-go-src}/protoc-gen-go/descriptor");
deps = [ goProto ];
};
plugin = package {
name = "plugin";
path = "github.com/golang/protobuf/protoc-gen-go/plugin";
srcs = goFilesIn (toPath "${proto-go-src}/protoc-gen-go/plugin");
deps = [ descriptor ];
};
remap = package {
name = "remap";
path = "github.com/golang/protobuf/protoc-gen-go/generator/internal/remap";
srcs = goFilesIn (toPath "${proto-go-src}/protoc-gen-go/generator/internal/remap");
};
generator = package {
name = "generator";
path = "github.com/golang/protobuf/protoc-gen-go/generator";
srcs = goFilesIn (toPath "${proto-go-src}/protoc-gen-go/generator");
deps = [ descriptor remap plugin ];
};
grpc = package {
name = "grpc";
path = "github.com/golang/protobuf/protoc-gen-go/grpc";
deps = [ generator ];
srcs = goFilesIn (toPath "${proto-go-src}/protoc-gen-go/grpc");
};
in program {
name = "protoc-gen-go";
deps = [ goProto grpc generator ];
srcs = filter
(f: (match "(.*)/doc.go" f) == null)
(goFilesIn (toPath "${proto-go-src}/protoc-gen-go"));
};
in {
# Only the high-level builder functions are exposed
inherit program package proto;
}
|
