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
|
#include "eval.hh"
#include "command.hh"
#include "common-args.hh"
#include "shared.hh"
#include "store-api.hh"
using namespace nix;
struct CmdBuild : InstallablesCommand, MixDryRun, MixProfile
{
Path outLink = "result";
CmdBuild()
{
addFlag({
.longName = "out-link",
.shortName = 'o',
.description = "path of the symlink to the build result",
.labels = {"path"},
.handler = {&outLink},
.completer = completePath
});
addFlag({
.longName = "no-link",
.description = "do not create a symlink to the build result",
.handler = {&outLink, Path("")},
});
}
std::string description() override
{
return "build a derivation or fetch a store path";
}
Examples examples() override
{
return {
Example{
"To build and run GNU Hello from NixOS 17.03:",
"nix build -f channel:nixos-17.03 hello; ./result/bin/hello"
},
Example{
"To build the build.x86_64-linux attribute from release.nix:",
"nix build -f release.nix build.x86_64-linux"
},
Example{
"To make a profile point at GNU Hello:",
"nix build --profile /tmp/profile nixpkgs#hello"
},
};
}
void run(ref<Store> store) override
{
auto buildables = build(store, dryRun ? DryRun : Build, installables);
if (dryRun) return;
if (outLink != "") {
for (size_t i = 0; i < buildables.size(); ++i) {
for (auto & output : buildables[i].outputs)
if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>()) {
std::string symlink = outLink;
if (i) symlink += fmt("-%d", i);
if (output.first != "out") symlink += fmt("-%s", output.first);
store2->addPermRoot(output.second, absPath(symlink), true);
}
}
}
updateProfile(buildables);
}
};
static auto r1 = registerCommand<CmdBuild>("build");
|
