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Merge pull request #767 from mogorman/garbage_collect_keep_last_few

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Implement --delete-generations + flag for keeping last N number of gens
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Peter Simons 2018-05-31 10:00:21 +02:00 • committed by GitHub
commit 93aa3bea2e
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4 changed files with 42 additions and 6 deletions
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8
src/nix-env/nix-env.cc
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@ -1284,6 +1284,14 @@ static void opDeleteGenerations(Globals & globals, Strings opFlags, Strings opAr
deleteOldGenerations(globals.profile, globals.dryRun);
} else if (opArgs.size() == 1 && opArgs.front().find('d') != string::npos) {
deleteGenerationsOlderThan(globals.profile, opArgs.front(), globals.dryRun);
} else if (opArgs.size() == 1 && opArgs.front().find('+') != string::npos) {
if(opArgs.front().size() < 2)
throw Error(format("invalid number of generations ‘%1%’") % opArgs.front());
string str_max = string(opArgs.front(), 1, opArgs.front().size());
int max;
if (!string2Int(str_max, max) || max == 0)
throw Error(format("invalid number of generations to keep ‘%1%’") % opArgs.front());
deleteGenerationsGreaterThan(globals.profile, max, globals.dryRun);
} else {
std::set<unsigned int> gens;
for (auto & i : opArgs) {