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https://github.com/privatevoid-net/nix-super.git
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* Version numbers can be omitted in install/uninstall. E.g.,
nix-env -i foo.nix subversion The version number part of a derivation name is defined as everything following the first dash not followed by a letter.
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2 changed files with 110 additions and 38 deletions
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@ -4,8 +4,9 @@ nix-env [OPTIONS...] [ARGUMENTS...]
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Operations:
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--install / -i FILE: add a derivation to the user environment
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--uninstall / -e: remove a derivation to the user environment
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--install / -i FILE: add derivations to the user environment
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--uninstall / -e: remove derivations from the user environment
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--upgrade / -u FILE: upgrade derivation in the user environment
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--query / -q: perform a query on an environment or Nix expression
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The previous operations take a list of derivation names. The special
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@ -230,20 +230,71 @@ void createUserEnv(EvalState & state, const DrvInfos & drvs,
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}
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typedef map<string, Path> NameMap;
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NameMap mapByNames(DrvInfos & drvs)
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class DrvName
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{
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NameMap nameMap;
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for (DrvInfos::iterator i = drvs.begin(); i != drvs.end(); ++i)
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nameMap[i->second.name] = i->first;
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return nameMap;
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string fullName;
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string name;
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string version;
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unsigned int hits;
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public:
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/* Parse a derivation name. The `name' part of a derivation name
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is everything up to but not including the first dash *not*
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followed by a letter. The `version' part is the rest
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(excluding the separating dash). E.g., `apache-httpd-2.0.48'
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is parsed to (`apache-httpd', '2.0.48'). */
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DrvName(const string & s) : hits(0)
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{
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name = fullName = s;
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for (unsigned int i = 0; i < s.size(); ++i) {
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if (s[i] == '-' && i + 1 < s.size() && !isalpha(s[i + 1])) {
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name = string(s, 0, i);
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version = string(s, i + 1);
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break;
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}
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}
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}
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bool matches(DrvName & n)
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{
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if (name != "*" && name != n.name) return false;
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if (version != "" && version != n.version) return false;
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return true;
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}
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void hit()
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{
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hits++;
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}
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unsigned int getHits()
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{
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return hits;
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}
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string getFullName()
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{
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return fullName;
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}
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};
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typedef list<DrvName> DrvNames;
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static DrvNames drvNamesFromArgs(const Strings & opArgs)
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{
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DrvNames result;
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for (Strings::const_iterator i = opArgs.begin();
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i != opArgs.end(); ++i)
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result.push_back(DrvName(*i));
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return result;
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}
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void installDerivations(EvalState & state,
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Path nePath, Strings drvNames, const Path & linkPath)
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Path nePath, DrvNames & selectors, const Path & linkPath)
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{
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debug(format("installing derivations from `%1%'") % nePath);
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@ -251,24 +302,29 @@ void installDerivations(EvalState & state,
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DrvInfos availDrvs;
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loadDerivations(state, nePath, availDrvs);
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NameMap nameMap = mapByNames(availDrvs);
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/* Filter out the ones we're not interested in. */
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DrvInfos selectedDrvs;
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if (drvNames.size() > 0 && drvNames.front() == "*") { /* !!! hack */
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selectedDrvs = availDrvs;
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} else {
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for (Strings::iterator i = drvNames.begin();
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i != drvNames.end(); ++i)
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for (DrvInfos::iterator i = availDrvs.begin();
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i != availDrvs.end(); ++i)
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{
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DrvName drvName(i->second.name);
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for (DrvNames::iterator j = selectors.begin();
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j != selectors.end(); ++j)
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{
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NameMap::iterator j = nameMap.find(*i);
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if (j == nameMap.end())
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throw Error(format("unknown derivation `%1%'") % *i);
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else
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selectedDrvs[j->second] = availDrvs[j->second];
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if (j->matches(drvName)) {
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j->hit();
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selectedDrvs.insert(*i);
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}
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}
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}
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/* Check that all selectors have been used. */
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for (DrvNames::iterator i = selectors.begin();
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i != selectors.end(); ++i)
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if (i->getHits() == 0)
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throw Error(format("selector `%1%' matches no derivations")
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% i->getFullName());
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/* Add in the already installed derivations. */
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DrvInfos installedDrvs;
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queryInstalled(state, installedDrvs, linkPath);
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@ -286,29 +342,40 @@ static void opInstall(Globals & globals,
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if (opArgs.size() < 1) throw UsageError("Nix file expected");
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Path nePath = opArgs.front();
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opArgs.pop_front();
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installDerivations(globals.state, nePath,
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Strings(opArgs.begin(), opArgs.end()), globals.linkPath);
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DrvNames drvNames = drvNamesFromArgs(
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Strings(++opArgs.begin(), opArgs.end()));
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installDerivations(globals.state, nePath, drvNames, globals.linkPath);
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}
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void uninstallDerivations(EvalState & state, Strings drvNames,
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static void opUpgrade(Globals & globals,
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Strings opFlags, Strings opArgs)
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{
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flags `%1%'") % opFlags.front());
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if (opArgs.size() < 1) throw UsageError("Nix file expected");
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Path nePath = opArgs.front();
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opArgs.pop_front();
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}
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void uninstallDerivations(EvalState & state, DrvNames & selectors,
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Path & linkPath)
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{
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DrvInfos installedDrvs;
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queryInstalled(state, installedDrvs, linkPath);
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NameMap nameMap = mapByNames(installedDrvs);
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for (Strings::iterator i = drvNames.begin();
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i != drvNames.end(); ++i)
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for (DrvInfos::iterator i = installedDrvs.begin();
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i != installedDrvs.end(); ++i)
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{
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NameMap::iterator j = nameMap.find(*i);
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if (j == nameMap.end())
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throw Error(format("unknown derivation `%1%'") % *i);
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else
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installedDrvs.erase(j->second);
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DrvName drvName(i->second.name);
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for (DrvNames::iterator j = selectors.begin();
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j != selectors.end(); ++j)
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if (j->matches(drvName))
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installedDrvs.erase(i);
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}
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createUserEnv(state, installedDrvs, linkPath);
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@ -321,7 +388,9 @@ static void opUninstall(Globals & globals,
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if (opFlags.size() > 0)
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throw UsageError(format("unknown flags `%1%'") % opFlags.front());
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uninstallDerivations(globals.state, opArgs, globals.linkPath);
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DrvNames drvNames = drvNamesFromArgs(opArgs);
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uninstallDerivations(globals.state, drvNames, globals.linkPath);
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}
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@ -412,6 +481,8 @@ void run(Strings args)
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op = opInstall;
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else if (arg == "--uninstall" || arg == "-e")
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op = opUninstall;
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else if (arg == "--upgrade" || arg == "-u")
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op = opUpgrade;
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else if (arg == "--query" || arg == "-q")
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op = opQuery;
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else if (arg == "--link" || arg == "-l") {
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