[versioning] Add message when vcpkg is cloned to a shallow repository

include/vcpkg/base/messages.h

@@ -1379,6 +1379,11 @@ namespace vcpkg
                     "An example of env_var is \"HTTP(S)_PROXY\""
                     "'--' at the beginning must be preserved",
                     "-- Setting \"{env_var}\" environment variables to \"{url}\".");
+    DECLARE_MESSAGE(ShallowRepositoryDetected,
+                    (msg::path),
+                    "",
+                    "vcpkg was cloned as a shallow repository in: {path}\n"
+                    "Try again with a full vcpkg clone.");
     DECLARE_MESSAGE(ShaPassedAsArgAndOption,
                     (),
                     "",

include/vcpkg/vcpkgpaths.h

@@ -136,6 +136,7 @@ namespace vcpkg
         std::string get_current_git_sha_baseline_message() const;
         ExpectedS<Path> git_checkout_port(StringView port_name, StringView git_tree, const Path& dot_git_dir) const;
         ExpectedL<std::string> git_show(StringView treeish, const Path& dot_git_dir) const;
+        bool git_is_shallow_clone(const Path& dot_git_dir) const;
 
         const DownloadManager& get_download_manager() const;
 

locales/messages.en.json

@@ -346,6 +346,7 @@
   "SettingEnvVar": "-- Setting \"{env_var}\" environment variables to \"{url}\".",
   "ShaPassedAsArgAndOption": "SHA512 passed as both an argument and as an option. Only pass one of these.",
   "ShaPassedWithConflict": "SHA512 passed, but --skip-sha512 was also passed; only do one or the other.",
+  "ShallowRepositoryDetected": "vcpkg was cloned as a shallow repository in: {path}\nTry again with a full vcpkg clone.",
   "SkipClearingInvalidDir": "Skipping clearing contents of {path} because it was not a directory.",
   "SourceFieldPortNameMismatch": "The 'Source' field inside the CONTROL file, or \"name\" field inside the vcpkg.json file has the name {package_name} and does not match the port directory \"{path}\".",
   "SpecifiedFeatureTurnedOff": "'{command_name}' feature specifically turned off, but --{option} was specified.",

locales/messages.json

@@ -564,6 +564,8 @@
   "_SettingEnvVar.comment": "An example of env_var is \"HTTP(S)_PROXY\"'--' at the beginning must be preserved An example of {env_var} is VCPKG_DEFAULT_TRIPLET. An example of {url} is https://github.com/microsoft/vcpkg.",
   "ShaPassedAsArgAndOption": "SHA512 passed as both an argument and as an option. Only pass one of these.",
   "ShaPassedWithConflict": "SHA512 passed, but --skip-sha512 was also passed; only do one or the other.",
+  "ShallowRepositoryDetected": "vcpkg was cloned as a shallow repository in: {path}\nTry again with a full vcpkg clone.",
+  "_ShallowRepositoryDetected.comment": "An example of {path} is /foo/bar.",
   "SkipClearingInvalidDir": "Skipping clearing contents of {path} because it was not a directory.",
   "_SkipClearingInvalidDir.comment": "An example of {path} is /foo/bar.",
   "SourceFieldPortNameMismatch": "The 'Source' field inside the CONTROL file, or \"name\" field inside the vcpkg.json file has the name {package_name} and does not match the port directory \"{path}\".",

src/vcpkg/base/messages.cpp

@@ -718,6 +718,7 @@ namespace vcpkg
     REGISTER_MESSAGE(ResultsHeader);
     REGISTER_MESSAGE(SerializedBinParagraphHeader);
     REGISTER_MESSAGE(SettingEnvVar);
+    REGISTER_MESSAGE(ShallowRepositoryDetected);
     REGISTER_MESSAGE(ShaPassedAsArgAndOption);
     REGISTER_MESSAGE(ShaPassedWithConflict);
     REGISTER_MESSAGE(SkipClearingInvalidDir);

src/vcpkg/vcpkgpaths.cpp

@@ -971,8 +971,14 @@ namespace vcpkg
         }
         return ret;
     }
+
     std::string VcpkgPaths::get_current_git_sha_baseline_message() const
     {
+        if (git_is_shallow_clone(this->root / ".git"))
+        {
+            return msg::format(msgShallowRepositoryDetected, msg::path = this->root / ".git").to_string();
+        }
+
         auto maybe_cur_sha = get_current_git_sha();
         if (auto p_sha = maybe_cur_sha.get())
         {
@@ -993,6 +999,19 @@ namespace vcpkg
         return flatten_out(cmd_execute_and_capture_output(showcmd), Tools::GIT);
     }
 
+    bool VcpkgPaths::git_is_shallow_clone(const Path& dot_git_dir) const
+    {
+        auto cmd =
+            git_cmd_builder(dot_git_dir, dot_git_dir).string_arg("rev-parse").string_arg("--is-shallow-repository");
+        auto output = flatten_out(cmd_execute_and_capture_output(cmd), Tools::GIT);
+        if (!output)
+        {
+            Debug::println(output.error());
+            return false;
+        }
+        return Strings::case_insensitive_ascii_equals("true", Strings::trim(*output.get()));
+    }
+
     ExpectedS<std::map<std::string, std::string, std::less<>>> VcpkgPaths::git_get_local_port_treeish_map() const
     {
         const auto local_repo = this->root / ".git";
@@ -1080,9 +1099,17 @@ namespace vcpkg
         auto maybe_tar_output = flatten(cmd_execute_and_capture_output(tar_cmd_builder), Tools::TAR);
         if (!maybe_tar_output)
         {
+            auto message =
+                Strings::concat(PRELUDE, "Error: Failed to tar port directory\n", std::move(maybe_tar_output).error());
+            if (git_is_shallow_clone(this->root / ".git"))
+            {
+                message.push_back('\n');
+                message.append(msg::format(msgShallowRepositoryDetected, msg::path = this->root / ".git").to_string());
+            }
             return {
-                Strings::concat(PRELUDE, "Error: Failed to tar port directory\n", std::move(maybe_tar_output).error()),
-                expected_right_tag};
+                std::move(message),
+                expected_right_tag,
+            };
         }
 
         extract_tar_cmake(this->get_tool_exe(Tools::CMAKE, stdout_sink), destination_tar, destination_tmp);