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https://github.com/privatevoid-net/nix-super.git
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patch: cli: apply-to-installable, nix-dram edition
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parent
a72dd4916f
commit
78384699de
2 changed files with 34 additions and 3 deletions
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@ -94,6 +94,7 @@ struct SourceExprCommand : virtual Args, MixFlakeOptions
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{
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{
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std::optional<Path> file;
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std::optional<Path> file;
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std::optional<std::string> expr;
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std::optional<std::string> expr;
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std::optional<std::string> applyToInstallable;
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// FIXME: move this; not all commands (e.g. 'nix run') use it.
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// FIXME: move this; not all commands (e.g. 'nix run') use it.
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OperateOn operateOn = OperateOn::Output;
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OperateOn operateOn = OperateOn::Output;
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@ -158,6 +158,14 @@ SourceExprCommand::SourceExprCommand()
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.category = installablesCategory,
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.category = installablesCategory,
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.handler = {&operateOn, OperateOn::Derivation},
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.handler = {&operateOn, OperateOn::Derivation},
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});
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});
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addFlag({
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.longName = "apply-to-installable",
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.description = "Apply the function *expr* to each installable.",
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.category = installablesCategory,
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.labels = {"expr"},
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.handler = {&applyToInstallable},
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});
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}
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}
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Strings SourceExprCommand::getDefaultFlakeAttrPaths()
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Strings SourceExprCommand::getDefaultFlakeAttrPaths()
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@ -745,6 +753,14 @@ std::vector<std::shared_ptr<Installable>> SourceExprCommand::parseInstallables(
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state->eval(e, *vFile);
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state->eval(e, *vFile);
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}
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}
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if (applyToInstallable) {
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auto vApply = state->allocValue();
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state->eval(state->parseExprFromString(*applyToInstallable, absPath(".")), *vApply);
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auto vRes = state->allocValue();
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state->callFunction(*vApply, *vFile, *vRes, noPos);
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vFile = vRes;
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}
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for (auto & s : ss)
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for (auto & s : ss)
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result.push_back(std::make_shared<InstallableAttrPath>(state, *this, vFile, s == "." ? "" : s));
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result.push_back(std::make_shared<InstallableAttrPath>(state, *this, vFile, s == "." ? "" : s));
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@ -754,6 +770,9 @@ std::vector<std::shared_ptr<Installable>> SourceExprCommand::parseInstallables(
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std::exception_ptr ex;
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std::exception_ptr ex;
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if (s.find('/') != std::string::npos) {
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if (s.find('/') != std::string::npos) {
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if (applyToInstallable) {
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throw Error("cannot apply function: installable cannot be evaluated");
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}
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try {
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try {
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result.push_back(std::make_shared<InstallableStorePath>(store, store->followLinksToStorePath(s)));
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result.push_back(std::make_shared<InstallableStorePath>(store, store->followLinksToStorePath(s)));
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continue;
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continue;
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@ -772,14 +791,25 @@ std::vector<std::shared_ptr<Installable>> SourceExprCommand::parseInstallables(
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? std::make_pair(parseFlakeRef("flake:default", absPath(".")), s)
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? std::make_pair(parseFlakeRef("flake:default", absPath(".")), s)
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: parseFlakeRefWithFragment(s, absPath("."));
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: parseFlakeRefWithFragment(s, absPath("."));
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result.push_back(std::make_shared<InstallableFlake>(
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auto state = getEvalState();
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auto installableFlake = std::make_shared<InstallableFlake>(
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this,
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this,
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getEvalState(),
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state,
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std::move(flakeRef),
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std::move(flakeRef),
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fragment,
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fragment,
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getDefaultFlakeAttrPaths(),
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getDefaultFlakeAttrPaths(),
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getDefaultFlakeAttrPathPrefixes(),
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getDefaultFlakeAttrPathPrefixes(),
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lockFlags));
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lockFlags);
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if (applyToInstallable) {
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auto [v, pos] = installableFlake->toValue(*state);
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auto vApply = state->allocValue();
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state->eval(state->parseExprFromString(*applyToInstallable, absPath(".")), *vApply);
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auto vRes = state->allocValue();
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state->callFunction(*vApply, *v, *vRes, noPos);
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result.push_back(std::make_shared<InstallableAttrPath>(state, *this, vRes, ""));
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} else {
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result.push_back(installableFlake);
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}
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continue;
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continue;
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} catch (...) {
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} catch (...) {
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ex = std::current_exception();
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ex = std::current_exception();
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