nixos/nix
1
1
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2025-11-26 20:20:58 +01:00
Code Activity

Merged R8636

Browse source
This commit is contained in:
Wouter den Breejen 2007-10-08 10:20:43 +00:00
parent 8e9c7d9338
commit 854e155b2c
8 changed files with 97 additions and 33 deletions
Download patch file Download diff file Expand all files Collapse all files

51
src/nix-env/nix-env.cc
View file

@ -252,6 +252,16 @@ static void createUserEnv(EvalState & state, const DrvInfos & elems,
}
static int comparePriorities(EvalState & state,
const DrvInfo & drv1, const DrvInfo & drv2)
{
int prio1, prio2;
if (!string2Int(drv1.queryMetaInfo(state, "priority"), prio1)) prio1 = 0;
if (!string2Int(drv2.queryMetaInfo(state, "priority"), prio2)) prio2 = 0;
return prio2 - prio1; /* higher number = lower priority, so negate */
}
static DrvInfos filterBySelector(EvalState & state,
const DrvInfos & allElems,
const Strings & args, bool newestOnly)
@ -278,8 +288,10 @@ static DrvInfos filterBySelector(EvalState & state,
}
/* If `newestOnly', if a selector matches multiple derivations
with the same name, pick the one with the highest version.
If there are multiple derivations with the same name *and*
with the same name, pick the one with the highest priority.
If there are multiple derivations with the same priority,
pick the one with the highest version. If there are
multiple derivations with the same priority and name and
version, then pick the first one. */
if (newestOnly) {
@ -290,13 +302,22 @@ static DrvInfos filterBySelector(EvalState & state,
for (Matches::iterator j = matches.begin(); j != matches.end(); ++j) {
DrvName drvName(j->first.name);
int d = 1;
Newest::iterator k = newest.find(drvName.name);
if (k != newest.end()) {
int d = compareVersions(drvName.version, DrvName(k->second.first.name).version);
if (d > 0) newest[drvName.name] = *j;
else if (d == 0) multiple.insert(j->first.name);
} else
d = comparePriorities(state, j->first, k->second.first);
if (d == 0)
d = compareVersions(drvName.version, DrvName(k->second.first.name).version);
}
if (d > 0) {
newest[drvName.name] = *j;
multiple.erase(j->first.name);
} else if (d == 0) {
multiple.insert(j->first.name);
}
}
matches.clear();
@ -712,9 +733,10 @@ static void upgradeDerivations(Globals & globals,
if (meta["keep"] == "true") continue;
/* Find the derivation in the input Nix expression with the
same name and satisfying the version constraints specified
same name that satisfies the version constraints specified
by upgradeType. If there are multiple matches, take the
one with highest version. */
one with the highest priority. If there are still multiple
matches, take the one with the highest version. */
DrvInfos::iterator bestElem = availElems.end();
DrvName bestName;
for (DrvInfos::iterator j = availElems.begin();
@ -722,16 +744,19 @@ static void upgradeDerivations(Globals & globals,
{
DrvName newName(j->name);
if (newName.name == drvName.name) {
int d = compareVersions(drvName.version, newName.version);
int d = comparePriorities(globals.state, *i, *j);
if (d == 0) d = compareVersions(drvName.version, newName.version);
if (upgradeType == utLt && d < 0 ||
upgradeType == utLeq && d <= 0 ||
upgradeType == utEq && d == 0 ||
upgradeType == utAlways)
{
if ((bestElem == availElems.end() ||
compareVersions(
bestName.version, newName.version) < 0))
{
int d2 = -1;
if (bestElem != availElems.end()) {
d2 = comparePriorities(globals.state, *bestElem, *j);
if (d2 == 0) d2 = compareVersions(bestName.version, newName.version);
}
if (d2 < 0) {
bestElem = j;
bestName = newName;
}