1 files changed, 10 insertions, 8 deletions

diff --git a/src/buildtool/serve_api/remote/source_tree_client.hpp b/src/buildtool/serve_api/remote/source_tree_client.hpp
index 9eeef493..fdfd99f8 100644
--- a/src/buildtool/serve_api/remote/source_tree_client.hpp
+++ b/src/buildtool/serve_api/remote/source_tree_client.hpp
@@ -45,7 +45,8 @@ class SourceTreeClient {
     /// at index 1 the tree identifier on success.
     [[nodiscard]] auto ServeCommitTree(std::string const& commit_id,
                                        std::string const& subdir,
-                                       bool sync_tree) noexcept -> result_t;
+                                       bool sync_tree) const noexcept
+        -> result_t;
 
     /// \brief Retrieve the Git tree of an archive content, if known by the
     /// endpoint. It is a fatal error if the content blob is known to the
@@ -64,7 +65,7 @@ class SourceTreeClient {
         std::string const& archive_type,
         std::string const& subdir,
         std::optional<PragmaSpecial> const& resolve_symlinks,
-        bool sync_tree) noexcept -> result_t;
+        bool sync_tree) const noexcept -> result_t;
 
     /// \brief Retrieve the Git tree of a directory of distfiles, if all the
     /// content blobs are known by the endpoint. It is a fatal error if all
@@ -78,35 +79,36 @@ class SourceTreeClient {
     [[nodiscard]] auto ServeDistdirTree(
         std::shared_ptr<std::unordered_map<std::string, std::string>> const&
             distfiles,
-        bool sync_tree) noexcept -> result_t;
+        bool sync_tree) const noexcept -> result_t;
 
     /// \brief Retrieve the Git tree of a foreign-file directory, if all content
     /// blobs are known to the end point and, as a side effect, make that tree
     /// known to the serve endpoint.
     [[nodiscard]] auto ServeForeignFileTree(const std::string& content,
                                             const std::string& name,
-                                            bool executable) noexcept
+                                            bool executable) const noexcept
         -> result_t;
 
     /// \brief Make a given content blob available in remote CAS, if known by
     /// serve remote.
     /// \param[in] content Hash of the archive content to look up.
     /// \returns Flag to state whether content is in remote CAS.
-    [[nodiscard]] auto ServeContent(std::string const& content) noexcept
+    [[nodiscard]] auto ServeContent(std::string const& content) const noexcept
         -> bool;
 
     /// \brief Make a given tree available in remote CAS, if known by serve
     /// remote.
     /// \param[in] tree_id Identifier of the Git tree to look up.
     /// \returns Flag to state whether tree is in remote CAS.
-    [[nodiscard]] auto ServeTree(std::string const& tree_id) noexcept -> bool;
+    [[nodiscard]] auto ServeTree(std::string const& tree_id) const noexcept
+        -> bool;
 
     /// \brief Checks if the serve endpoint has a given tree locally available
     /// and makes it available for a serve-orchestrated build.
     /// \param[in] tree_id Identifier of the Git tree to look up.
     /// \returns Flag to state whether tree is known or not, or nullopt on
     /// errors.
-    [[nodiscard]] auto CheckRootTree(std::string const& tree_id) noexcept
+    [[nodiscard]] auto CheckRootTree(std::string const& tree_id) const noexcept
         -> std::optional<bool>;
 
     /// \brief Retrieve tree from the CAS of the associated remote-execution
@@ -114,7 +116,7 @@ class SourceTreeClient {
     /// \param[in] tree_id Identifier of the Git tree to retrieve.
     /// \returns Flag to state whether tree was successfully imported into the
     /// local Git storage or not.
-    [[nodiscard]] auto GetRemoteTree(std::string const& tree_id) noexcept
+    [[nodiscard]] auto GetRemoteTree(std::string const& tree_id) const noexcept
         -> bool;
 
   private: