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* Give a useful error message when an evaluation error occurs while

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trying to upgrade a package.
This commit is contained in:
Eelco Dolstra 2009-10-13 09:30:17 +00:00
parent 53a4981fa2
commit 6f7d7bc1de
1 changed files with 48 additions and 41 deletions
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89
src/nix-env/nix-env.cc
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@ -704,52 +704,59 @@ static void upgradeDerivations(Globals & globals,
foreach (DrvInfos::iterator, i, installedElems) { foreach (DrvInfos::iterator, i, installedElems) {
DrvName drvName(i->name); DrvName drvName(i->name);
MetaInfo meta = i->queryMetaInfo(globals.state); try {
if (keep(meta)) {
newElems.push_back(*i);
continue;
}
/* Find the derivation in the input Nix expression with MetaInfo meta = i->queryMetaInfo(globals.state);
the same name that satisfies the version constraints if (keep(meta)) {
specified by upgradeType. If there are multiple newElems.push_back(*i);
matches, take the one with the highest priority. If continue;
there are still multiple matches, take the one with the }
highest version. */
DrvInfos::iterator bestElem = availElems.end(); /* Find the derivation in the input Nix expression
DrvName bestName; with the same name that satisfies the version
foreach (DrvInfos::iterator, j, availElems) { constraints specified by upgradeType. If there are
DrvName newName(j->name); multiple matches, take the one with the highest
if (newName.name == drvName.name) { priority. If there are still multiple matches,
int d = comparePriorities(globals.state, *i, *j); take the one with the highest version. */
if (d == 0) d = compareVersions(drvName.version, newName.version); DrvInfos::iterator bestElem = availElems.end();
if ((upgradeType == utLt && d < 0) || DrvName bestName;
(upgradeType == utLeq && d <= 0) || foreach (DrvInfos::iterator, j, availElems) {
(upgradeType == utEq && d == 0) || DrvName newName(j->name);
upgradeType == utAlways) if (newName.name == drvName.name) {
{ int d = comparePriorities(globals.state, *i, *j);
int d2 = -1; if (d == 0) d = compareVersions(drvName.version, newName.version);
if (bestElem != availElems.end()) { if ((upgradeType == utLt && d < 0) ||
d2 = comparePriorities(globals.state, *bestElem, *j); (upgradeType == utLeq && d <= 0) ||
if (d2 == 0) d2 = compareVersions(bestName.version, newName.version); (upgradeType == utEq && d == 0) ||
} upgradeType == utAlways)
if (d2 < 0) { {
bestElem = j; int d2 = -1;
bestName = newName; 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;
}
} }
} }
} }
}
if (bestElem != availElems.end() && if (bestElem != availElems.end() &&
i->queryOutPath(globals.state) != i->queryOutPath(globals.state) !=
bestElem->queryOutPath(globals.state)) bestElem->queryOutPath(globals.state))
{ {
printMsg(lvlInfo, printMsg(lvlInfo,
format("upgrading `%1%' to `%2%'") format("upgrading `%1%' to `%2%'")
% i->name % bestElem->name); % i->name % bestElem->name);
newElems.push_back(*bestElem); newElems.push_back(*bestElem);
} else newElems.push_back(*i); } else newElems.push_back(*i);
} catch (Error & e) {
e.addPrefix(format("while trying to find an upgrade for `%1%':\n") % i->name);
throw;
}
} }
printMissing(globals.state, newElems); printMissing(globals.state, newElems);