Integrate review changes

src/libcmd/installables.cc

@@ -609,7 +609,7 @@ InstallableFlake::InstallableFlake(
         throw UsageError("'--arg' and '--argstr' are incompatible with flakes");
 }
 
-std::tuple<std::string, FlakeRef, InstallableValue::DerivationInfo> InstallableFlake::toDerivation()
+std::tuple<std::string, FlakeRef, InstallableValue::DerivationInfo, std::optional<NixInt>> InstallableFlake::toDerivation()
 {
     auto attr = getCursor(*state);
 
@@ -621,11 +621,15 @@ std::tuple<std::string, FlakeRef, InstallableValue::DerivationInfo> InstallableF
     auto drvPath = attr->forceDerivation();
 
     std::set<std::string> outputsToInstall;
+    std::optional<NixInt> priority;
 
-    if (auto aMeta = attr->maybeGetAttr(state->sMeta))
+    if (auto aMeta = attr->maybeGetAttr(state->sMeta)) {
         if (auto aOutputsToInstall = aMeta->maybeGetAttr("outputsToInstall"))
             for (auto & s : aOutputsToInstall->getListOfStrings())
                 outputsToInstall.insert(s);
+        if (auto aPriority = aMeta->maybeGetAttr("priority"))
+            priority = aPriority->getInt();
+    }
 
     if (outputsToInstall.empty() || std::get_if<AllOutputs>(&outputsSpec)) {
         outputsToInstall.clear();
@@ -643,9 +647,10 @@ std::tuple<std::string, FlakeRef, InstallableValue::DerivationInfo> InstallableF
     auto drvInfo = DerivationInfo {
         .drvPath = std::move(drvPath),
         .outputsToInstall = std::move(outputsToInstall),
+        .priority = priority,
     };
 
-    return {attrPath, getLockedFlake()->flake.lockedRef, std::move(drvInfo)};
+    return {attrPath, getLockedFlake()->flake.lockedRef, std::move(drvInfo), priority};
 }
 
 std::vector<InstallableValue::DerivationInfo> InstallableFlake::toDerivations()

src/libcmd/installables.hh

@@ -142,6 +142,7 @@ struct InstallableValue : Installable
     {
         StorePath drvPath;
         std::set<std::string> outputsToInstall;
+        std::optional<NixInt> priority;
     };
 
     virtual std::vector<DerivationInfo> toDerivations() = 0;
@@ -176,7 +177,7 @@ struct InstallableFlake : InstallableValue
 
     Value * getFlakeOutputs(EvalState & state, const flake::LockedFlake & lockedFlake);
 
-    std::tuple<std::string, FlakeRef, DerivationInfo> toDerivation();
+    std::tuple<std::string, FlakeRef, DerivationInfo, std::optional<NixInt>> toDerivation();
 
     std::vector<DerivationInfo> toDerivations() override;
 

src/libexpr/eval-cache.cc

@@ -621,6 +621,28 @@ bool AttrCursor::getBool()
     return v.boolean;
 }
 
+NixInt AttrCursor::getInt()
+{
+    if (root->db) {
+        if (!cachedValue)
+            cachedValue = root->db->getAttr(getKey());
+        if (cachedValue && !std::get_if<placeholder_t>(&cachedValue->second)) {
+            if (auto i = std::get_if<NixInt>(&cachedValue->second)) {
+                debug("using cached Integer attribute '%s'", getAttrPathStr());
+                return *i;
+            } else
+                throw TypeError("'%s' is not an Integer", getAttrPathStr());
+        }
+    }
+
+    auto & v = forceValue();
+
+    if (v.type() != nInt)
+        throw TypeError("'%s' is not an Integer", getAttrPathStr());
+
+    return v.integer;
+}
+
 std::vector<std::string> AttrCursor::getListOfStrings()
 {
     if (root->db) {

src/libexpr/eval-cache.hh

@@ -63,6 +63,7 @@ typedef std::variant<
     misc_t,
     failed_t,
     bool,
+    NixInt,
     std::vector<std::string>
     > AttrValue;
 
@@ -116,6 +117,8 @@ public:
 
     bool getBool();
 
+    NixInt getInt();
+
     std::vector<std::string> getListOfStrings();
 
     std::vector<Symbol> getAttrs();

src/libstore/builtins/buildenv.cc

@@ -95,7 +95,7 @@ static void createLinks(State & state, const Path & srcDir, const Path & dstDir,
                         throw Error(
                                 "files '%1%' and '%2%' have the same priority %3%; "
                                 "use 'nix-env --set-flag priority NUMBER INSTALLED_PKGNAME' "
-                                "or 'nix profile --priority NUMBER INSTALLED_PKGNAME' "
+                                "or 'nix profile install --priority NUMBER INSTALLED_PKGNAME' "
                                 "to change the priority of one of the conflicting packages"
                                 " (0 being the highest priority)",
                                 srcFile, readLink(dstFile), priority);

src/nix/profile.cc

@@ -269,14 +269,7 @@ struct CmdProfileInstall : InstallablesCommand, MixDefaultProfile
             .longName = "priority",
             .description = "The priority of the package to install.",
             .labels = {"priority"},
-            .handler = {[&](std::string s) { 
-                try{
-                    priority = std::stoi(s);
-                } catch (std::invalid_argument & e) {
-                    throw ParseError("invalid priority '%s'", s);
-                }
-            }},
-            // .completer = // no completer since number
+            .handler = {&priority},
         });
     };
 
@@ -303,20 +296,26 @@ struct CmdProfileInstall : InstallablesCommand, MixDefaultProfile
         for (auto & installable : installables) {
             ProfileElement element;
 
-            if(priority) {
-                element.priority = *priority;
-            };
+
 
             if (auto installable2 = std::dynamic_pointer_cast<InstallableFlake>(installable)) {
                 // FIXME: make build() return this?
-                auto [attrPath, resolvedRef, drv] = installable2->toDerivation();
+                auto [attrPath, resolvedRef, drv, priority] = installable2->toDerivation();
                 element.source = ProfileElementSource {
                     installable2->flakeRef,
                     resolvedRef,
                     attrPath,
                     installable2->outputsSpec
                 };
+
+                if(drv.priority) {
+                    element.priority = *drv.priority;
                 }
+            }
+
+            if(priority) { // if --priority was specified we want to override the priority of the installable
+                element.priority = *priority;
+            };
 
             element.updateStorePaths(getEvalStore(), store, builtPaths[installable.get()]);
 
@@ -476,7 +475,7 @@ struct CmdProfileUpgrade : virtual SourceExprCommand, MixDefaultProfile, MixProf
                     Strings{},
                     lockFlags);
 
-                auto [attrPath, resolvedRef, drv] = installable->toDerivation();
+                auto [attrPath, resolvedRef, drv, priority] = installable->toDerivation();
 
                 if (element.source->resolvedRef == resolvedRef) continue;
 

tests/nix-profile.sh

@@ -136,3 +136,5 @@ nix profile install $flake2Dir --priority 100
 [[ $($TEST_HOME/.nix-profile/bin/hello) = "Hello World" ]]
 nix profile install $flake2Dir --priority 0
 [[ $($TEST_HOME/.nix-profile/bin/hello) = "Hello World2" ]]
+# nix profile install $flake1Dir --priority 100
+# [[ $($TEST_HOME/.nix-profile/bin/hello) = "Hello World" ]]