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profile: add verbosity

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warn if there are no matches and give notice of removing packages as
they are found
This commit is contained in:
Tom Bereknyei 2022-02-11 10:23:19 -05:00
parent 0b3d8e1a29
commit 270fb5f192
1 changed files with 26 additions and 8 deletions
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34
src/nix/profile.cc
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@ -295,7 +295,11 @@ public:
expectArgs("elements", &_matchers);
}
typedef std::variant<size_t, Path, std::regex> Matcher;
struct RegexPattern {
std::string pattern;
std::regex reg;
};
typedef std::variant<size_t, Path, RegexPattern> Matcher;
std::vector<Matcher> getMatchers(ref<Store> store)
{
@ -307,7 +311,7 @@ public:
else if (store->isStorePath(s))
res.push_back(s);
else
res.push_back(std::regex(s, std::regex::extended | std::regex::icase));
res.push_back(RegexPattern{s,std::regex(s, std::regex::extended | std::regex::icase)});
}
return res;
@ -320,9 +324,9 @@ public:
if (*n == pos) return true;
} else if (auto path = std::get_if<Path>(&matcher)) {
if (element.storePaths.count(store.parseStorePath(*path))) return true;
} else if (auto regex = std::get_if<std::regex>(&matcher)) {
} else if (auto regex = std::get_if<RegexPattern>(&matcher)) {
if (element.source
&& std::regex_match(element.source->attrPath, *regex))
&& std::regex_match(element.source->attrPath, regex->reg))
return true;
}
}
@ -355,16 +359,30 @@ struct CmdProfileRemove : virtual EvalCommand, MixDefaultProfile, MixProfileElem
for (size_t i = 0; i < oldManifest.elements.size(); ++i) {
auto & element(oldManifest.elements[i]);
if (!matches(*store, element, i, matchers))
if (!matches(*store, element, i, matchers)) {
newManifest.elements.push_back(std::move(element));
} else {
notice("removing '%s'", element.describe());
}
}
// FIXME: warn about unused matchers?
auto removedCount = oldManifest.elements.size() - newManifest.elements.size();
printInfo("removed %d packages, kept %d packages",
oldManifest.elements.size() - newManifest.elements.size(),
removedCount,
newManifest.elements.size());
if (removedCount == 0) {
for (auto matcher: matchers) {
if (const size_t* index = std::get_if<size_t>(&matcher)){
warn("'%d' is not a valid index in profile", *index);
} else if (const Path* path = std::get_if<Path>(&matcher)){
warn("'%s' does not match any paths in profile", *path);
} else if (const RegexPattern* regex = std::get_if<RegexPattern>(&matcher)){
warn("'%s' does not match any packages in profile", regex->pattern);
}
}
warn ("Try `nix profile list` to see the current profile.");
}
updateProfile(newManifest.build(store));
}
};