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
|
#include "misc.hh"
#include "store.hh"
#include "build.hh"
#include "db.hh"
namespace nix {
Derivation derivationFromPath(const Path & drvPath)
{
assertStorePath(drvPath);
ensurePath(drvPath);
ATerm t = ATreadFromNamedFile(drvPath.c_str());
if (!t) throw Error(format("cannot read aterm from `%1%'") % drvPath);
return parseDerivation(t);
}
void computeFSClosure(const Path & storePath,
PathSet & paths, bool flipDirection)
{
if (paths.find(storePath) != paths.end()) return;
paths.insert(storePath);
PathSet references;
if (flipDirection)
queryReferrers(noTxn, storePath, references);
else
queryReferences(noTxn, storePath, references);
for (PathSet::iterator i = references.begin();
i != references.end(); ++i)
computeFSClosure(*i, paths, flipDirection);
}
Path findOutput(const Derivation & drv, string id)
{
for (DerivationOutputs::const_iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
if (i->first == id) return i->second.path;
throw Error(format("derivation has no output `%1%'") % id);
}
void queryMissing(const PathSet & targets,
PathSet & willBuild, PathSet & willSubstitute)
{
PathSet todo(targets.begin(), targets.end()), done;
while (!todo.empty()) {
Path p = *(todo.begin());
todo.erase(p);
if (done.find(p) != done.end()) continue;
done.insert(p);
if (isDerivation(p)) {
if (!isValidPath(p)) continue;
Derivation drv = derivationFromPath(p);
bool mustBuild = false;
for (DerivationOutputs::iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
if (!isValidPath(i->second.path) &&
querySubstitutes(noTxn, i->second.path).size() == 0)
mustBuild = true;
if (mustBuild) {
willBuild.insert(p);
todo.insert(drv.inputSrcs.begin(), drv.inputSrcs.end());
for (DerivationInputs::iterator i = drv.inputDrvs.begin();
i != drv.inputDrvs.end(); ++i)
todo.insert(i->first);
} else
for (DerivationOutputs::iterator i = drv.outputs.begin();
i != drv.outputs.end(); ++i)
todo.insert(i->second.path);
}
else {
if (isValidPath(p)) continue;
if (querySubstitutes(noTxn, p).size() > 0)
willSubstitute.insert(p);
PathSet refs;
queryReferences(noTxn, p, todo);
}
}
}
}
|
