diff --git a/src/libcmd/command.cc b/src/libcmd/command.cc
index 220a90cf6..543250da3 100644
--- a/src/libcmd/command.cc
+++ b/src/libcmd/command.cc
@@ -128,10 +128,10 @@ ref<EvalState> EvalCommand::getEvalState()
         evalState =
             #if HAVE_BOEHMGC
             std::allocate_shared<EvalState>(traceable_allocator<EvalState>(),
-                searchPath, getEvalStore(), getStore())
+                lookupPath, getEvalStore(), getStore())
             #else
             std::make_shared<EvalState>(
-                searchPath, getEvalStore(), getStore())
+                lookupPath, getEvalStore(), getStore())
             #endif
             ;
 
diff --git a/src/libcmd/common-eval-args.cc b/src/libcmd/common-eval-args.cc
index c6ee0d0b2..155b43b70 100644
--- a/src/libcmd/common-eval-args.cc
+++ b/src/libcmd/common-eval-args.cc
@@ -125,7 +125,7 @@ MixEvalArgs::MixEvalArgs()
         .category = category,
         .labels = {"path"},
         .handler = {[&](std::string s) {
-            searchPath.elements.emplace_back(SearchPath::Elem::parse(s));
+            lookupPath.elements.emplace_back(LookupPath::Elem::parse(s));
         }}
     });
 
diff --git a/src/libcmd/common-eval-args.hh b/src/libcmd/common-eval-args.hh
index 25ce5b9da..d2efea28e 100644
--- a/src/libcmd/common-eval-args.hh
+++ b/src/libcmd/common-eval-args.hh
@@ -23,7 +23,7 @@ struct MixEvalArgs : virtual Args, virtual MixRepair
 
     Bindings * getAutoArgs(EvalState & state);
 
-    SearchPath searchPath;
+    LookupPath lookupPath;
 
     std::optional<std::string> evalStoreUrl;
 
diff --git a/src/libcmd/repl.cc b/src/libcmd/repl.cc
index ffbb43a69..a045e83d2 100644
--- a/src/libcmd/repl.cc
+++ b/src/libcmd/repl.cc
@@ -77,7 +77,7 @@ struct NixRepl
 
     std::unique_ptr<ReplInteracter> interacter;
 
-    NixRepl(const SearchPath & searchPath, nix::ref<Store> store,ref<EvalState> state,
+    NixRepl(const LookupPath & lookupPath, nix::ref<Store> store,ref<EvalState> state,
             std::function<AnnotatedValues()> getValues);
     virtual ~NixRepl() = default;
 
@@ -122,7 +122,7 @@ std::string removeWhitespace(std::string s)
 }
 
 
-NixRepl::NixRepl(const SearchPath & searchPath, nix::ref<Store> store, ref<EvalState> state,
+NixRepl::NixRepl(const LookupPath & lookupPath, nix::ref<Store> store, ref<EvalState> state,
             std::function<NixRepl::AnnotatedValues()> getValues)
     : AbstractNixRepl(state)
     , debugTraceIndex(0)
@@ -508,7 +508,7 @@ ProcessLineResult NixRepl::processLine(std::string line)
 
         // runProgram redirects stdout to a StringSink,
         // using runProgram2 to allow editors to display their UI
-        runProgram2(RunOptions { .program = editor, .searchPath = true, .args = args });
+        runProgram2(RunOptions { .program = editor, .lookupPath = true, .args = args });
 
         // Reload right after exiting the editor
         state->resetFileCache();
@@ -784,11 +784,11 @@ void NixRepl::evalString(std::string s, Value & v)
 
 
 std::unique_ptr<AbstractNixRepl> AbstractNixRepl::create(
-   const SearchPath & searchPath, nix::ref<Store> store, ref<EvalState> state,
+   const LookupPath & lookupPath, nix::ref<Store> store, ref<EvalState> state,
    std::function<AnnotatedValues()> getValues)
 {
     return std::make_unique<NixRepl>(
-        searchPath,
+        lookupPath,
         openStore(),
         state,
         getValues
@@ -804,9 +804,9 @@ ReplExitStatus AbstractNixRepl::runSimple(
         NixRepl::AnnotatedValues values;
         return values;
     };
-    SearchPath searchPath = {};
+    LookupPath lookupPath = {};
     auto repl = std::make_unique<NixRepl>(
-            searchPath,
+            lookupPath,
             openStore(),
             evalState,
             getValues
diff --git a/src/libcmd/repl.hh b/src/libcmd/repl.hh
index aac79ec74..3fd4b2c39 100644
--- a/src/libcmd/repl.hh
+++ b/src/libcmd/repl.hh
@@ -20,7 +20,7 @@ struct AbstractNixRepl
     typedef std::vector<std::pair<Value*,std::string>> AnnotatedValues;
 
     static std::unique_ptr<AbstractNixRepl> create(
-        const SearchPath & searchPath, nix::ref<Store> store, ref<EvalState> state,
+        const LookupPath & lookupPath, nix::ref<Store> store, ref<EvalState> state,
         std::function<AnnotatedValues()> getValues);
 
     static ReplExitStatus runSimple(
diff --git a/src/libexpr-c/nix_api_expr.cc b/src/libexpr-c/nix_api_expr.cc
index a5c03d5aa..a29c3425e 100644
--- a/src/libexpr-c/nix_api_expr.cc
+++ b/src/libexpr-c/nix_api_expr.cc
@@ -85,17 +85,17 @@ nix_err nix_value_force_deep(nix_c_context * context, EvalState * state, Value *
     NIXC_CATCH_ERRS
 }
 
-EvalState * nix_state_create(nix_c_context * context, const char ** searchPath_c, Store * store)
+EvalState * nix_state_create(nix_c_context * context, const char ** lookupPath_c, Store * store)
 {
     if (context)
         context->last_err_code = NIX_OK;
     try {
-        nix::Strings searchPath;
-        if (searchPath_c != nullptr)
-            for (size_t i = 0; searchPath_c[i] != nullptr; i++)
-                searchPath.push_back(searchPath_c[i]);
+        nix::Strings lookupPath;
+        if (lookupPath_c != nullptr)
+            for (size_t i = 0; lookupPath_c[i] != nullptr; i++)
+                lookupPath.push_back(lookupPath_c[i]);
 
-        return new EvalState{nix::EvalState(nix::SearchPath::parse(searchPath), store->ptr)};
+        return new EvalState{nix::EvalState(nix::LookupPath::parse(lookupPath), store->ptr)};
     }
     NIXC_CATCH_ERRS_NULL
 }
diff --git a/src/libexpr-c/nix_api_expr.h b/src/libexpr-c/nix_api_expr.h
index fd9746ab7..04fc92f0f 100644
--- a/src/libexpr-c/nix_api_expr.h
+++ b/src/libexpr-c/nix_api_expr.h
@@ -140,11 +140,11 @@ nix_err nix_value_force_deep(nix_c_context * context, EvalState * state, Value *
  * @brief Create a new Nix language evaluator state.
  *
  * @param[out] context Optional, stores error information
- * @param[in] searchPath Array of strings corresponding to entries in NIX_PATH.
+ * @param[in] lookupPath Array of strings corresponding to entries in NIX_PATH.
  * @param[in] store The Nix store to use.
  * @return A new Nix state or NULL on failure.
  */
-EvalState * nix_state_create(nix_c_context * context, const char ** searchPath, Store * store);
+EvalState * nix_state_create(nix_c_context * context, const char ** lookupPath, Store * store);
 
 /**
  * @brief Frees a Nix state.
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index 72da1c465..35ccca79a 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -343,7 +343,7 @@ void initGC()
 }
 
 EvalState::EvalState(
-    const SearchPath & _searchPath,
+    const LookupPath & _lookupPath,
     ref<Store> store,
     std::shared_ptr<Store> buildStore)
     : sWith(symbols.create("<with>"))
@@ -448,16 +448,16 @@ EvalState::EvalState(
 
     /* Initialise the Nix expression search path. */
     if (!evalSettings.pureEval) {
-        for (auto & i : _searchPath.elements)
-            searchPath.elements.emplace_back(SearchPath::Elem {i});
+        for (auto & i : _lookupPath.elements)
+            lookupPath.elements.emplace_back(LookupPath::Elem {i});
         for (auto & i : evalSettings.nixPath.get())
-            searchPath.elements.emplace_back(SearchPath::Elem::parse(i));
+            lookupPath.elements.emplace_back(LookupPath::Elem::parse(i));
     }
 
     /* Allow access to all paths in the search path. */
     if (rootFS.dynamic_pointer_cast<AllowListInputAccessor>())
-        for (auto & i : searchPath.elements)
-            resolveSearchPathPath(i.path, true);
+        for (auto & i : lookupPath.elements)
+            resolveLookupPathPath(i.path, true);
 
     corepkgsFS->addFile(
         CanonPath("fetchurl.nix"),
@@ -2820,19 +2820,19 @@ Expr * EvalState::parseStdin()
 
 SourcePath EvalState::findFile(const std::string_view path)
 {
-    return findFile(searchPath, path);
+    return findFile(lookupPath, path);
 }
 
 
-SourcePath EvalState::findFile(const SearchPath & searchPath, const std::string_view path, const PosIdx pos)
+SourcePath EvalState::findFile(const LookupPath & lookupPath, const std::string_view path, const PosIdx pos)
 {
-    for (auto & i : searchPath.elements) {
+    for (auto & i : lookupPath.elements) {
         auto suffixOpt = i.prefix.suffixIfPotentialMatch(path);
 
         if (!suffixOpt) continue;
         auto suffix = *suffixOpt;
 
-        auto rOpt = resolveSearchPathPath(i.path);
+        auto rOpt = resolveLookupPathPath(i.path);
         if (!rOpt) continue;
         auto r = *rOpt;
 
@@ -2852,11 +2852,11 @@ SourcePath EvalState::findFile(const SearchPath & searchPath, const std::string_
 }
 
 
-std::optional<std::string> EvalState::resolveSearchPathPath(const SearchPath::Path & value0, bool initAccessControl)
+std::optional<std::string> EvalState::resolveLookupPathPath(const LookupPath::Path & value0, bool initAccessControl)
 {
     auto & value = value0.s;
-    auto i = searchPathResolved.find(value);
-    if (i != searchPathResolved.end()) return i->second;
+    auto i = lookupPathResolved.find(value);
+    if (i != lookupPathResolved.end()) return i->second;
 
     std::optional<std::string> res;
 
@@ -2912,7 +2912,7 @@ std::optional<std::string> EvalState::resolveSearchPathPath(const SearchPath::Pa
     else
         debug("failed to resolve search path element '%s'", value);
 
-    searchPathResolved.emplace(value, res);
+    lookupPathResolved.emplace(value, res);
     return res;
 }
 
diff --git a/src/libexpr/eval.hh b/src/libexpr/eval.hh
index af65fdcba..b62c994ad 100644
--- a/src/libexpr/eval.hh
+++ b/src/libexpr/eval.hh
@@ -162,7 +162,7 @@ struct DebugTrace {
 };
 
 // Don't want Windows function
-#undef SearchPath
+#undef LookupPath
 
 class EvalState : public std::enable_shared_from_this<EvalState>
 {
@@ -311,9 +311,9 @@ private:
 #endif
     FileEvalCache fileEvalCache;
 
-    SearchPath searchPath;
+    LookupPath lookupPath;
 
-    std::map<std::string, std::optional<std::string>> searchPathResolved;
+    std::map<std::string, std::optional<std::string>> lookupPathResolved;
 
     /**
      * Cache used by prim_match().
@@ -335,12 +335,12 @@ private:
 public:
 
     EvalState(
-        const SearchPath & _searchPath,
+        const LookupPath & _lookupPath,
         ref<Store> store,
         std::shared_ptr<Store> buildStore = nullptr);
     ~EvalState();
 
-    SearchPath getSearchPath() { return searchPath; }
+    LookupPath getLookupPath() { return lookupPath; }
 
     /**
      * Return a `SourcePath` that refers to `path` in the root
@@ -409,7 +409,7 @@ public:
      * Look up a file in the search path.
      */
     SourcePath findFile(const std::string_view path);
-    SourcePath findFile(const SearchPath & searchPath, const std::string_view path, const PosIdx pos = noPos);
+    SourcePath findFile(const LookupPath & lookupPath, const std::string_view path, const PosIdx pos = noPos);
 
     /**
      * Try to resolve a search path value (not the optional key part).
@@ -418,8 +418,8 @@ public:
      *
      * If it is not found, return `std::nullopt`
      */
-    std::optional<std::string> resolveSearchPathPath(
-        const SearchPath::Path & elem,
+    std::optional<std::string> resolveLookupPathPath(
+        const LookupPath::Path & elem,
         bool initAccessControl = false);
 
     /**
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index f03acc2da..df274caed 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -1716,7 +1716,7 @@ static void prim_findFile(EvalState & state, const PosIdx pos, Value * * args, V
 {
     state.forceList(*args[0], pos, "while evaluating the first argument passed to builtins.findFile");
 
-    SearchPath searchPath;
+    LookupPath lookupPath;
 
     for (auto v2 : args[0]->listItems()) {
         state.forceAttrs(*v2, pos, "while evaluating an element of the list passed to builtins.findFile");
@@ -1744,15 +1744,15 @@ static void prim_findFile(EvalState & state, const PosIdx pos, Value * * args, V
             ).atPos(pos).debugThrow();
         }
 
-        searchPath.elements.emplace_back(SearchPath::Elem {
-            .prefix = SearchPath::Prefix { .s = prefix },
-            .path = SearchPath::Path { .s = path },
+        lookupPath.elements.emplace_back(LookupPath::Elem {
+            .prefix = LookupPath::Prefix { .s = prefix },
+            .path = LookupPath::Path { .s = path },
         });
     }
 
     auto path = state.forceStringNoCtx(*args[1], pos, "while evaluating the second argument passed to builtins.findFile");
 
-    v.mkPath(state.findFile(searchPath, path, pos));
+    v.mkPath(state.findFile(lookupPath, path, pos));
 }
 
 static RegisterPrimOp primop_findFile(PrimOp {
@@ -4629,8 +4629,8 @@ void EvalState::createBaseEnv()
     });
 
     /* Add a value containing the current Nix expression search path. */
-    auto list = buildList(searchPath.elements.size());
-    for (const auto & [n, i] : enumerate(searchPath.elements)) {
+    auto list = buildList(lookupPath.elements.size());
+    for (const auto & [n, i] : enumerate(lookupPath.elements)) {
         auto attrs = buildBindings(2);
         attrs.alloc("path").mkString(i.path.s);
         attrs.alloc("prefix").mkString(i.prefix.s);
diff --git a/src/libexpr/search-path.cc b/src/libexpr/search-path.cc
index e2c3e050a..657744e74 100644
--- a/src/libexpr/search-path.cc
+++ b/src/libexpr/search-path.cc
@@ -2,7 +2,7 @@
 
 namespace nix {
 
-std::optional<std::string_view> SearchPath::Prefix::suffixIfPotentialMatch(
+std::optional<std::string_view> LookupPath::Prefix::suffixIfPotentialMatch(
     std::string_view path) const
 {
     auto n = s.size();
@@ -27,11 +27,11 @@ std::optional<std::string_view> SearchPath::Prefix::suffixIfPotentialMatch(
 }
 
 
-SearchPath::Elem SearchPath::Elem::parse(std::string_view rawElem)
+LookupPath::Elem LookupPath::Elem::parse(std::string_view rawElem)
 {
     size_t pos = rawElem.find('=');
 
-    return SearchPath::Elem {
+    return LookupPath::Elem {
         .prefix = Prefix {
             .s = pos == std::string::npos
                 ? std::string { "" }
@@ -44,11 +44,11 @@ SearchPath::Elem SearchPath::Elem::parse(std::string_view rawElem)
 }
 
 
-SearchPath SearchPath::parse(const Strings & rawElems)
+LookupPath LookupPath::parse(const Strings & rawElems)
 {
-    SearchPath res;
+    LookupPath res;
     for (auto & rawElem : rawElems)
-        res.elements.emplace_back(SearchPath::Elem::parse(rawElem));
+        res.elements.emplace_back(LookupPath::Elem::parse(rawElem));
     return res;
 }
 
diff --git a/src/libexpr/search-path.hh b/src/libexpr/search-path.hh
index 231752ea6..6a63f3730 100644
--- a/src/libexpr/search-path.hh
+++ b/src/libexpr/search-path.hh
@@ -8,17 +8,17 @@
 
 namespace nix {
 
-// Do not want the windows macro (alias to `SearchPathA`)
-#undef SearchPath
+// Do not want the windows macro (alias to `LookupPathA`)
+#undef LookupPath
 
 /**
  * A "search path" is a list of ways look for something, used with
  * `builtins.findFile` and `< >` lookup expressions.
  */
-struct SearchPath
+struct LookupPath
 {
     /**
-     * A single element of a `SearchPath`.
+     * A single element of a `LookupPath`.
      *
      * Each element is tried in succession when looking up a path. The first
      * element to completely match wins.
@@ -26,16 +26,16 @@ struct SearchPath
     struct Elem;
 
     /**
-     * The first part of a `SearchPath::Elem` pair.
+     * The first part of a `LookupPath::Elem` pair.
      *
      * Called a "prefix" because it takes the form of a prefix of a file
      * path (first `n` path components). When looking up a path, to use
-     * a `SearchPath::Elem`, its `Prefix` must match the path.
+     * a `LookupPath::Elem`, its `Prefix` must match the path.
      */
     struct Prefix;
 
     /**
-     * The second part of a `SearchPath::Elem` pair.
+     * The second part of a `LookupPath::Elem` pair.
      *
      * It is either a path or a URL (with certain restrictions / extra
      * structure).
@@ -43,7 +43,7 @@ struct SearchPath
      * If the prefix of the path we are looking up matches, we then
      * check if the rest of the path points to something that exists
      * within the directory denoted by this. If so, the
-     * `SearchPath::Elem` as a whole matches, and that *something* being
+     * `LookupPath::Elem` as a whole matches, and that *something* being
      * pointed to by the rest of the path we are looking up is the
      * result.
      */
@@ -54,24 +54,24 @@ struct SearchPath
      * when looking up. (The actual lookup entry point is in `EvalState`
      * not in this class.)
      */
-    std::list<SearchPath::Elem> elements;
+    std::list<LookupPath::Elem> elements;
 
     /**
-     * Parse a string into a `SearchPath`
+     * Parse a string into a `LookupPath`
      */
-    static SearchPath parse(const Strings & rawElems);
+    static LookupPath parse(const Strings & rawElems);
 };
 
-struct SearchPath::Prefix
+struct LookupPath::Prefix
 {
     /**
      * Underlying string
      *
-     * @todo Should we normalize this when constructing a `SearchPath::Prefix`?
+     * @todo Should we normalize this when constructing a `LookupPath::Prefix`?
      */
     std::string s;
 
-    GENERATE_CMP(SearchPath::Prefix, me->s);
+    GENERATE_CMP(LookupPath::Prefix, me->s);
 
     /**
      * If the path possibly matches this search path element, return the
@@ -82,7 +82,7 @@ struct SearchPath::Prefix
     std::optional<std::string_view> suffixIfPotentialMatch(std::string_view path) const;
 };
 
-struct SearchPath::Path
+struct LookupPath::Path
 {
     /**
      * The location of a search path item, as a path or URL.
@@ -91,21 +91,21 @@ struct SearchPath::Path
      */
     std::string s;
 
-    GENERATE_CMP(SearchPath::Path, me->s);
+    GENERATE_CMP(LookupPath::Path, me->s);
 };
 
-struct SearchPath::Elem
+struct LookupPath::Elem
 {
 
     Prefix prefix;
     Path path;
 
-    GENERATE_CMP(SearchPath::Elem, me->prefix, me->path);
+    GENERATE_CMP(LookupPath::Elem, me->prefix, me->path);
 
     /**
-     * Parse a string into a `SearchPath::Elem`
+     * Parse a string into a `LookupPath::Elem`
      */
-    static SearchPath::Elem parse(std::string_view rawElem);
+    static LookupPath::Elem parse(std::string_view rawElem);
 };
 
 }
diff --git a/src/libfetchers/git-utils.cc b/src/libfetchers/git-utils.cc
index a4a00374c..e310af063 100644
--- a/src/libfetchers/git-utils.cc
+++ b/src/libfetchers/git-utils.cc
@@ -385,7 +385,7 @@ struct GitRepoImpl : GitRepo, std::enable_shared_from_this<GitRepoImpl>
 
         runProgram(RunOptions {
             .program = "git",
-            .searchPath = true,
+            .lookupPath = true,
             // FIXME: git stderr messes up our progress indicator, so
             // we're using --quiet for now. Should process its stderr.
             .args = gitArgs,
diff --git a/src/libfetchers/unix/mercurial.cc b/src/libfetchers/unix/mercurial.cc
index 4e0b26274..df6bc5335 100644
--- a/src/libfetchers/unix/mercurial.cc
+++ b/src/libfetchers/unix/mercurial.cc
@@ -24,7 +24,7 @@ static RunOptions hgOptions(const Strings & args)
 
     return {
         .program = "hg",
-        .searchPath = true,
+        .lookupPath = true,
         .args = args,
         .environment = env
     };
diff --git a/src/libstore/unix/build/local-derivation-goal.cc b/src/libstore/unix/build/local-derivation-goal.cc
index aad5173e7..72125cb82 100644
--- a/src/libstore/unix/build/local-derivation-goal.cc
+++ b/src/libstore/unix/build/local-derivation-goal.cc
@@ -77,7 +77,7 @@ void handleDiffHook(
         try {
             auto diffRes = runProgram(RunOptions {
                 .program = diffHook,
-                .searchPath = true,
+                .lookupPath = true,
                 .args = {tryA, tryB, drvPath, tmpDir},
                 .uid = uid,
                 .gid = gid,
diff --git a/src/libutil/processes.hh b/src/libutil/processes.hh
index a7e85b5be..e319f79e0 100644
--- a/src/libutil/processes.hh
+++ b/src/libutil/processes.hh
@@ -80,14 +80,14 @@ pid_t startProcess(std::function<void()> fun, const ProcessOptions & options = P
  * Run a program and return its stdout in a string (i.e., like the
  * shell backtick operator).
  */
-std::string runProgram(Path program, bool searchPath = false,
+std::string runProgram(Path program, bool lookupPath = false,
     const Strings & args = Strings(),
     const std::optional<std::string> & input = {}, bool isInteractive = false);
 
 struct RunOptions
 {
     Path program;
-    bool searchPath = true;
+    bool lookupPath = true;
     Strings args;
 #ifndef _WIN32
     std::optional<uid_t> uid;
diff --git a/src/libutil/unix/processes.cc b/src/libutil/unix/processes.cc
index f5d584330..1af559a21 100644
--- a/src/libutil/unix/processes.cc
+++ b/src/libutil/unix/processes.cc
@@ -245,10 +245,10 @@ pid_t startProcess(std::function<void()> fun, const ProcessOptions & options)
 }
 
 
-std::string runProgram(Path program, bool searchPath, const Strings & args,
+std::string runProgram(Path program, bool lookupPath, const Strings & args,
     const std::optional<std::string> & input, bool isInteractive)
 {
-    auto res = runProgram(RunOptions {.program = program, .searchPath = searchPath, .args = args, .input = input, .isInteractive = isInteractive});
+    auto res = runProgram(RunOptions {.program = program, .lookupPath = lookupPath, .args = args, .input = input, .isInteractive = isInteractive});
 
     if (!statusOk(res.first))
         throw ExecError(res.first, "program '%1%' %2%", program, statusToString(res.first));
@@ -335,7 +335,7 @@ void runProgram2(const RunOptions & options)
 
         restoreProcessContext();
 
-        if (options.searchPath)
+        if (options.lookupPath)
             execvp(options.program.c_str(), stringsToCharPtrs(args_).data());
             // This allows you to refer to a program with a pathname relative
             // to the PATH variable.
diff --git a/src/libutil/windows/processes.cc b/src/libutil/windows/processes.cc
index 2a5377f3f..5ef4ed1e4 100644
--- a/src/libutil/windows/processes.cc
+++ b/src/libutil/windows/processes.cc
@@ -28,7 +28,7 @@
 
 namespace nix {
 
-std::string runProgram(Path program, bool searchPath, const Strings & args,
+std::string runProgram(Path program, bool lookupPath, const Strings & args,
     const std::optional<std::string> & input, bool isInteractive)
 {
     throw UnimplementedError("Cannot shell out to git on Windows yet");
diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index 198e9cda0..30ebc9498 100644
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -258,7 +258,7 @@ static void main_nix_build(int argc, char * * argv)
     auto store = openStore();
     auto evalStore = myArgs.evalStoreUrl ? openStore(*myArgs.evalStoreUrl) : store;
 
-    auto state = std::make_unique<EvalState>(myArgs.searchPath, evalStore, store);
+    auto state = std::make_unique<EvalState>(myArgs.lookupPath, evalStore, store);
     state->repair = myArgs.repair;
     if (myArgs.repair) buildMode = bmRepair;
 
diff --git a/src/nix-env/nix-env.cc b/src/nix-env/nix-env.cc
index eeca01833..25c8f43c2 100644
--- a/src/nix-env/nix-env.cc
+++ b/src/nix-env/nix-env.cc
@@ -1525,7 +1525,7 @@ static int main_nix_env(int argc, char * * argv)
 
         auto store = openStore();
 
-        globals.state = std::shared_ptr<EvalState>(new EvalState(myArgs.searchPath, store));
+        globals.state = std::shared_ptr<EvalState>(new EvalState(myArgs.lookupPath, store));
         globals.state->repair = myArgs.repair;
 
         globals.instSource.nixExprPath = std::make_shared<SourcePath>(
diff --git a/src/nix-instantiate/nix-instantiate.cc b/src/nix-instantiate/nix-instantiate.cc
index 1e1728225..35664374c 100644
--- a/src/nix-instantiate/nix-instantiate.cc
+++ b/src/nix-instantiate/nix-instantiate.cc
@@ -157,7 +157,7 @@ static int main_nix_instantiate(int argc, char * * argv)
         auto store = openStore();
         auto evalStore = myArgs.evalStoreUrl ? openStore(*myArgs.evalStoreUrl) : store;
 
-        auto state = std::make_unique<EvalState>(myArgs.searchPath, evalStore, store);
+        auto state = std::make_unique<EvalState>(myArgs.lookupPath, evalStore, store);
         state->repair = myArgs.repair;
 
         Bindings & autoArgs = *myArgs.getAutoArgs(*state);
diff --git a/src/nix/develop.cc b/src/nix/develop.cc
index 35d3da912..f2df814d7 100644
--- a/src/nix/develop.cc
+++ b/src/nix/develop.cc
@@ -687,7 +687,7 @@ struct CmdDevelop : Common, MixEnvironment
             }
         }
 
-        runProgramInStore(store, UseSearchPath::Use, shell, args, buildEnvironment.getSystem());
+        runProgramInStore(store, UseLookupPath::Use, shell, args, buildEnvironment.getSystem());
 #endif
     }
 };
diff --git a/src/nix/fmt.cc b/src/nix/fmt.cc
index 059904150..4b0fbb89d 100644
--- a/src/nix/fmt.cc
+++ b/src/nix/fmt.cc
@@ -49,7 +49,7 @@ struct CmdFmt : SourceExprCommand {
             }
         }
 
-        runProgramInStore(store, UseSearchPath::DontUse, app.program, programArgs);
+        runProgramInStore(store, UseLookupPath::DontUse, app.program, programArgs);
     };
 };
 
diff --git a/src/nix/prefetch.cc b/src/nix/prefetch.cc
index 8e6a2e805..f905cabef 100644
--- a/src/nix/prefetch.cc
+++ b/src/nix/prefetch.cc
@@ -193,7 +193,7 @@ static int main_nix_prefetch_url(int argc, char * * argv)
           startProgressBar();
 
         auto store = openStore();
-        auto state = std::make_unique<EvalState>(myArgs.searchPath, store);
+        auto state = std::make_unique<EvalState>(myArgs.lookupPath, store);
 
         Bindings & autoArgs = *myArgs.getAutoArgs(*state);
 
diff --git a/src/nix/repl.cc b/src/nix/repl.cc
index 8bbfe0f07..a2f3e033e 100644
--- a/src/nix/repl.cc
+++ b/src/nix/repl.cc
@@ -78,7 +78,7 @@ struct CmdRepl : RawInstallablesCommand
             return values;
         };
         auto repl = AbstractNixRepl::create(
-            searchPath,
+            lookupPath,
             openStore(),
             state,
             getValues
diff --git a/src/nix/run.cc b/src/nix/run.cc
index c45683302..88821710d 100644
--- a/src/nix/run.cc
+++ b/src/nix/run.cc
@@ -25,7 +25,7 @@ std::string chrootHelperName = "__run_in_chroot";
 namespace nix {
 
 void runProgramInStore(ref<Store> store,
-    UseSearchPath useSearchPath,
+    UseLookupPath useLookupPath,
     const std::string & program,
     const Strings & args,
     std::optional<std::string_view> system)
@@ -61,7 +61,7 @@ void runProgramInStore(ref<Store> store,
         linux::setPersonality(*system);
 #endif
 
-    if (useSearchPath == UseSearchPath::Use)
+    if (useLookupPath == UseLookupPath::Use)
         execvp(program.c_str(), stringsToCharPtrs(args).data());
     else
         execv(program.c_str(), stringsToCharPtrs(args).data());
@@ -142,7 +142,7 @@ struct CmdShell : InstallablesCommand, MixEnvironment
         Strings args;
         for (auto & arg : command) args.push_back(arg);
 
-        runProgramInStore(store, UseSearchPath::Use, *command.begin(), args);
+        runProgramInStore(store, UseLookupPath::Use, *command.begin(), args);
     }
 };
 
@@ -204,7 +204,7 @@ struct CmdRun : InstallableValueCommand
         Strings allArgs{app.program};
         for (auto & i : args) allArgs.push_back(i);
 
-        runProgramInStore(store, UseSearchPath::DontUse, app.program, allArgs);
+        runProgramInStore(store, UseLookupPath::DontUse, app.program, allArgs);
     }
 };
 
diff --git a/src/nix/run.hh b/src/nix/run.hh
index a55917b06..2fe6ed86a 100644
--- a/src/nix/run.hh
+++ b/src/nix/run.hh
@@ -5,13 +5,13 @@
 
 namespace nix {
 
-enum struct UseSearchPath {
+enum struct UseLookupPath {
     Use,
     DontUse
 };
 
 void runProgramInStore(ref<Store> store,
-    UseSearchPath useSearchPath,
+    UseLookupPath useLookupPath,
     const std::string & program,
     const Strings & args,
     std::optional<std::string_view> system = std::nullopt);
diff --git a/src/nix/upgrade-nix.cc b/src/nix/upgrade-nix.cc
index 4c7a74e16..a64b6a56e 100644
--- a/src/nix/upgrade-nix.cc
+++ b/src/nix/upgrade-nix.cc
@@ -147,7 +147,7 @@ struct CmdUpgradeNix : MixDryRun, StoreCommand
         auto req = FileTransferRequest((std::string&) settings.upgradeNixStorePathUrl);
         auto res = getFileTransfer()->download(req);
 
-        auto state = std::make_unique<EvalState>(SearchPath{}, store);
+        auto state = std::make_unique<EvalState>(LookupPath{}, store);
         auto v = state->allocValue();
         state->eval(state->parseExprFromString(res.data, state->rootPath(CanonPath("/no-such-path"))), *v);
         Bindings & bindings(*state->allocBindings(0));
diff --git a/tests/unit/libexpr/search-path.cc b/tests/unit/libexpr/search-path.cc
index dbe7ab95f..080679355 100644
--- a/tests/unit/libexpr/search-path.cc
+++ b/tests/unit/libexpr/search-path.cc
@@ -5,85 +5,85 @@
 
 namespace nix {
 
-TEST(SearchPathElem, parse_justPath) {
+TEST(LookupPathElem, parse_justPath) {
     ASSERT_EQ(
-        SearchPath::Elem::parse("foo"),
-        (SearchPath::Elem {
-            .prefix = SearchPath::Prefix { .s = "" },
-            .path = SearchPath::Path { .s = "foo" },
+        LookupPath::Elem::parse("foo"),
+        (LookupPath::Elem {
+            .prefix = LookupPath::Prefix { .s = "" },
+            .path = LookupPath::Path { .s = "foo" },
         }));
 }
 
-TEST(SearchPathElem, parse_emptyPrefix) {
+TEST(LookupPathElem, parse_emptyPrefix) {
     ASSERT_EQ(
-        SearchPath::Elem::parse("=foo"),
-        (SearchPath::Elem {
-            .prefix = SearchPath::Prefix { .s = "" },
-            .path = SearchPath::Path { .s = "foo" },
+        LookupPath::Elem::parse("=foo"),
+        (LookupPath::Elem {
+            .prefix = LookupPath::Prefix { .s = "" },
+            .path = LookupPath::Path { .s = "foo" },
         }));
 }
 
-TEST(SearchPathElem, parse_oneEq) {
+TEST(LookupPathElem, parse_oneEq) {
     ASSERT_EQ(
-        SearchPath::Elem::parse("foo=bar"),
-        (SearchPath::Elem {
-            .prefix = SearchPath::Prefix { .s = "foo" },
-            .path = SearchPath::Path { .s = "bar" },
+        LookupPath::Elem::parse("foo=bar"),
+        (LookupPath::Elem {
+            .prefix = LookupPath::Prefix { .s = "foo" },
+            .path = LookupPath::Path { .s = "bar" },
         }));
 }
 
-TEST(SearchPathElem, parse_twoEqs) {
+TEST(LookupPathElem, parse_twoEqs) {
     ASSERT_EQ(
-        SearchPath::Elem::parse("foo=bar=baz"),
-        (SearchPath::Elem {
-            .prefix = SearchPath::Prefix { .s = "foo" },
-            .path = SearchPath::Path { .s = "bar=baz" },
+        LookupPath::Elem::parse("foo=bar=baz"),
+        (LookupPath::Elem {
+            .prefix = LookupPath::Prefix { .s = "foo" },
+            .path = LookupPath::Path { .s = "bar=baz" },
         }));
 }
 
 
-TEST(SearchPathElem, suffixIfPotentialMatch_justPath) {
-    SearchPath::Prefix prefix { .s = "" };
+TEST(LookupPathElem, suffixIfPotentialMatch_justPath) {
+    LookupPath::Prefix prefix { .s = "" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("any/thing"), std::optional { "any/thing" });
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_misleadingPrefix1) {
-    SearchPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_misleadingPrefix1) {
+    LookupPath::Prefix prefix { .s = "foo" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("fooX"), std::nullopt);
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_misleadingPrefix2) {
-    SearchPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_misleadingPrefix2) {
+    LookupPath::Prefix prefix { .s = "foo" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("fooX/bar"), std::nullopt);
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_partialPrefix) {
-    SearchPath::Prefix prefix { .s = "fooX" };
+TEST(LookupPathElem, suffixIfPotentialMatch_partialPrefix) {
+    LookupPath::Prefix prefix { .s = "fooX" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("foo"), std::nullopt);
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_exactPrefix) {
-    SearchPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_exactPrefix) {
+    LookupPath::Prefix prefix { .s = "foo" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("foo"), std::optional { "" });
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_multiKey) {
-    SearchPath::Prefix prefix { .s = "foo/bar" };
+TEST(LookupPathElem, suffixIfPotentialMatch_multiKey) {
+    LookupPath::Prefix prefix { .s = "foo/bar" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/bar/baz"), std::optional { "baz" });
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_trailingSlash) {
-    SearchPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_trailingSlash) {
+    LookupPath::Prefix prefix { .s = "foo" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/"), std::optional { "" });
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_trailingDoubleSlash) {
-    SearchPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_trailingDoubleSlash) {
+    LookupPath::Prefix prefix { .s = "foo" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("foo//"), std::optional { "/" });
 }
 
-TEST(SearchPathElem, suffixIfPotentialMatch_trailingPath) {
-    SearchPath::Prefix prefix { .s = "foo" };
+TEST(LookupPathElem, suffixIfPotentialMatch_trailingPath) {
+    LookupPath::Prefix prefix { .s = "foo" };
     ASSERT_EQ(prefix.suffixIfPotentialMatch("foo/bar/baz"), std::optional { "bar/baz" });
 }