Update

.gitignore

@@ -18,3 +18,5 @@ cmake/CPM.cmake
 cpm-package-lock.cmake
 include/openssl
 include/tls.h
+libcserver_shared.so
+libcserver_static.a

CMakeLists.txt

@@ -7,6 +7,7 @@ set(CXX_EXTENSIONS NO)
 set(Boost_USE_MULTITHREADED ON)
 set(BOOST_NOT_HEADER_ONLY_COMPONENTS_THAT_YOU_NEED "url;program_options")
 set(BOOST_HEADER_ONLY_COMPONENTS_THAT_YOU_NEED "asio;pfr")
+set(UTEMPL_MODULE OFF)
 set(TRY_BOOST_VERSION "1.85.0")
 set(BOOST_INCLUDE_LIBRARIES
     "${BOOST_NOT_HEADER_ONLY_COMPONENTS_THAT_YOU_NEED};${BOOST_HEADER_ONLY_COMPONENTS_THAT_YOU_NEED}"
@@ -14,6 +15,7 @@ set(BOOST_INCLUDE_LIBRARIES
 
 option(CPM_USE_LOCAL_PACKAGES "Use local packages" ON)
 option(CSERVER_USE_LIBRESSL "Use LibreSSL" OFF)
+option(UTEMPL_USE_LOCAL_PACKAGE "Use utempl local package" OFF)
 
 file(
   DOWNLOAD
@@ -69,11 +71,16 @@ CPMAddPackage(
 
 endif()
 
+set(TMP ${CPM_USE_LOCAL_PACKAGES})
+set(CPM_USE_LOCAL_PACKAGES ${UTEMPL_USE_LOCAL_PACKAGE})
+
 CPMAddPackage(
   NAME utempl
   URL "https://github.com/linuxnyasha/utempl/archive/refs/heads/main.zip"
+  EXCLUDE_FROM_ALL ON
   OPTIONS "ENABLE_TESTS OFF" "ENABLE_EXAMPLES OFF"
 )
+set(CPM_USE_LOCAL_PACKAGES ${TMP})
 
 
 

Makefile

@@ -1,5 +1,10 @@
+VERSION = $(shell git describe --tags --always --long)
+
 MAKEFILE_DIR = $(shell dirname $(realpath $(firstword $(MAKEFILE_LIST))))
-TESTS_BIN = $(MAKEFILE_DIR)/build/cserver_tests
+BUILD_DIR = $(MAKEFILE_DIR)/build
+TESTS_BIN = $(BUILD_DIR)/cserver_tests
+
+DOXYGEN ?= doxygen
 
 CC = clang
 CXX = clang++
@@ -75,6 +80,13 @@ tidy: build/.ran-cmake
 		$(shell find examples -name *.cpp) \
 		$(shell find tests -name *.cpp)
 
+docs:
+	@( \
+		cat docs/doxygen.conf; \
+		echo PROJECT_NUMBER=$(VERSION); \
+		echo OUTPUT_DIRECTORY=$(BUILD_DIR)/docs \
+	) | $(DOXYGEN) -
+
 FORCE: ;
 
-.PHONY: all cmake test format clean distclean
+.PHONY: all cmake format test tidy docs clean distclean

cmake/check.cpp

@@ -1,29 +0,0 @@
-#include <tuple>
-#include <utempl/loopholes/core.hpp>
-#include <utempl/type_list.hpp>
-
-struct SomeStruct {
-  constexpr SomeStruct(auto&& arg) {
-    arg.Method(42);
-  };
-};
-
-struct Injector {
-  template <typename T, auto _ = utempl::loopholes::Injector<0, utempl::TypeList<T>{}>{}>
-  auto Method(T&&) const -> void;
-};
-
-template <typename T, auto... Args>
-inline constexpr auto Use() {
-  std::ignore = T{Args...};
-};
-
-template <typename...>
-consteval auto Ignore() {};
-
-
-auto main() -> int {
-  Ignore<decltype(Use<SomeStruct, Injector{}>())>();
-  static_assert(std::is_same_v<decltype(Magic(utempl::loopholes::Getter<0>{})), utempl::TypeList<int>>);
-};
-

cmake/cserverConfig.cmake.in

@@ -2,9 +2,3 @@
 
 include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
 check_required_components("@PROJECT_NAME@")
-
-try_compile(loopholes_body_inject
-  SOURCES "${CMAKE_CURRENT_LIST_DIR}/check.cpp")
-if(NOT loopholes_body_inject)
-  message(FATAL_ERROR "The Compiler Doesn't Support Retrieval Of Information Via Loopholes. If You Are Using gcc, Enable Optimizations.")
-endif()

docs/doxygen-awesome-css/doxygen-awesome-darkmode-toggle.js

@@ -0,0 +1,157 @@
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2021 - 2023 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+class DoxygenAwesomeDarkModeToggle extends HTMLElement {
+    // SVG icons from https://fonts.google.com/icons
+    // Licensed under the Apache 2.0 license:
+    // https://www.apache.org/licenses/LICENSE-2.0.html
+    static lightModeIcon = `<svg xmlns="http://www.w3.org/2000/svg" enable-background="new 0 0 24 24" height="24px" viewBox="0 0 24 24" width="24px" fill="#FCBF00"><rect fill="none" height="24" width="24"/><circle cx="12" cy="12" opacity=".3" r="3"/><path d="M12,9c1.65,0,3,1.35,3,3s-1.35,3-3,3s-3-1.35-3-3S10.35,9,12,9 M12,7c-2.76,0-5,2.24-5,5s2.24,5,5,5s5-2.24,5-5 S14.76,7,12,7L12,7z M2,13l2,0c0.55,0,1-0.45,1-1s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S1.45,13,2,13z M20,13l2,0c0.55,0,1-0.45,1-1 s-0.45-1-1-1l-2,0c-0.55,0-1,0.45-1,1S19.45,13,20,13z M11,2v2c0,0.55,0.45,1,1,1s1-0.45,1-1V2c0-0.55-0.45-1-1-1S11,1.45,11,2z M11,20v2c0,0.55,0.45,1,1,1s1-0.45,1-1v-2c0-0.55-0.45-1-1-1C11.45,19,11,19.45,11,20z M5.99,4.58c-0.39-0.39-1.03-0.39-1.41,0 c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0s0.39-1.03,0-1.41L5.99,4.58z M18.36,16.95 c-0.39-0.39-1.03-0.39-1.41,0c-0.39,0.39-0.39,1.03,0,1.41l1.06,1.06c0.39,0.39,1.03,0.39,1.41,0c0.39-0.39,0.39-1.03,0-1.41 L18.36,16.95z M19.42,5.99c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06c-0.39,0.39-0.39,1.03,0,1.41 s1.03,0.39,1.41,0L19.42,5.99z M7.05,18.36c0.39-0.39,0.39-1.03,0-1.41c-0.39-0.39-1.03-0.39-1.41,0l-1.06,1.06 c-0.39,0.39-0.39,1.03,0,1.41s1.03,0.39,1.41,0L7.05,18.36z"/></svg>`
+    static darkModeIcon = `<svg xmlns="http://www.w3.org/2000/svg" enable-background="new 0 0 24 24" height="24px" viewBox="0 0 24 24" width="24px" fill="#FE9700"><rect fill="none" height="24" width="24"/><path d="M9.37,5.51C9.19,6.15,9.1,6.82,9.1,7.5c0,4.08,3.32,7.4,7.4,7.4c0.68,0,1.35-0.09,1.99-0.27 C17.45,17.19,14.93,19,12,19c-3.86,0-7-3.14-7-7C5,9.07,6.81,6.55,9.37,5.51z" opacity=".3"/><path d="M9.37,5.51C9.19,6.15,9.1,6.82,9.1,7.5c0,4.08,3.32,7.4,7.4,7.4c0.68,0,1.35-0.09,1.99-0.27C17.45,17.19,14.93,19,12,19 c-3.86,0-7-3.14-7-7C5,9.07,6.81,6.55,9.37,5.51z M12,3c-4.97,0-9,4.03-9,9s4.03,9,9,9s9-4.03,9-9c0-0.46-0.04-0.92-0.1-1.36 c-0.98,1.37-2.58,2.26-4.4,2.26c-2.98,0-5.4-2.42-5.4-5.4c0-1.81,0.89-3.42,2.26-4.4C12.92,3.04,12.46,3,12,3L12,3z"/></svg>`
+    static title = "Toggle Light/Dark Mode"
+
+    static prefersLightModeInDarkModeKey = "prefers-light-mode-in-dark-mode"
+    static prefersDarkModeInLightModeKey = "prefers-dark-mode-in-light-mode"
+
+    static _staticConstructor = function() {
+        DoxygenAwesomeDarkModeToggle.enableDarkMode(DoxygenAwesomeDarkModeToggle.userPreference)
+        // Update the color scheme when the browsers preference changes
+        // without user interaction on the website.
+        window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', event => {
+            DoxygenAwesomeDarkModeToggle.onSystemPreferenceChanged()
+        })
+        // Update the color scheme when the tab is made visible again.
+        // It is possible that the appearance was changed in another tab 
+        // while this tab was in the background.
+        document.addEventListener("visibilitychange", visibilityState => {
+            if (document.visibilityState === 'visible') {
+                DoxygenAwesomeDarkModeToggle.onSystemPreferenceChanged()
+            }
+        });
+    }()
+
+    static init() {
+        $(function() {
+            $(document).ready(function() {
+                const toggleButton = document.createElement('doxygen-awesome-dark-mode-toggle')
+                toggleButton.title = DoxygenAwesomeDarkModeToggle.title
+                toggleButton.updateIcon()
+
+                window.matchMedia('(prefers-color-scheme: dark)').addEventListener('change', event => {
+                    toggleButton.updateIcon()
+                })
+                document.addEventListener("visibilitychange", visibilityState => {
+                    if (document.visibilityState === 'visible') {
+                        toggleButton.updateIcon()
+                    }
+                });
+
+                $(document).ready(function(){
+                    document.getElementById("MSearchBox").parentNode.appendChild(toggleButton)
+                })
+                $(window).resize(function(){
+                    document.getElementById("MSearchBox").parentNode.appendChild(toggleButton)
+                })
+            })
+        })
+    }
+
+    constructor() {
+        super();
+        this.onclick=this.toggleDarkMode
+    }
+
+    /**
+     * @returns `true` for dark-mode, `false` for light-mode system preference
+     */
+    static get systemPreference() {
+        return window.matchMedia('(prefers-color-scheme: dark)').matches
+    }
+
+    /**
+     * @returns `true` for dark-mode, `false` for light-mode user preference
+     */
+    static get userPreference() {
+        return (!DoxygenAwesomeDarkModeToggle.systemPreference && localStorage.getItem(DoxygenAwesomeDarkModeToggle.prefersDarkModeInLightModeKey)) || 
+        (DoxygenAwesomeDarkModeToggle.systemPreference && !localStorage.getItem(DoxygenAwesomeDarkModeToggle.prefersLightModeInDarkModeKey))
+    }
+
+    static set userPreference(userPreference) {
+        DoxygenAwesomeDarkModeToggle.darkModeEnabled = userPreference
+        if(!userPreference) {
+            if(DoxygenAwesomeDarkModeToggle.systemPreference) {
+                localStorage.setItem(DoxygenAwesomeDarkModeToggle.prefersLightModeInDarkModeKey, true)
+            } else {
+                localStorage.removeItem(DoxygenAwesomeDarkModeToggle.prefersDarkModeInLightModeKey)
+            }
+        } else {
+            if(!DoxygenAwesomeDarkModeToggle.systemPreference) {
+                localStorage.setItem(DoxygenAwesomeDarkModeToggle.prefersDarkModeInLightModeKey, true)
+            } else {
+                localStorage.removeItem(DoxygenAwesomeDarkModeToggle.prefersLightModeInDarkModeKey)
+            }
+        }
+        DoxygenAwesomeDarkModeToggle.onUserPreferenceChanged()
+    }
+
+    static enableDarkMode(enable) {
+        if(enable) {
+            DoxygenAwesomeDarkModeToggle.darkModeEnabled = true
+            document.documentElement.classList.add("dark-mode")
+            document.documentElement.classList.remove("light-mode")
+        } else {
+            DoxygenAwesomeDarkModeToggle.darkModeEnabled = false
+            document.documentElement.classList.remove("dark-mode")
+            document.documentElement.classList.add("light-mode")
+        }
+    }
+
+    static onSystemPreferenceChanged() {
+        DoxygenAwesomeDarkModeToggle.darkModeEnabled = DoxygenAwesomeDarkModeToggle.userPreference
+        DoxygenAwesomeDarkModeToggle.enableDarkMode(DoxygenAwesomeDarkModeToggle.darkModeEnabled)
+    }
+
+    static onUserPreferenceChanged() {
+        DoxygenAwesomeDarkModeToggle.enableDarkMode(DoxygenAwesomeDarkModeToggle.darkModeEnabled)
+    }
+
+    toggleDarkMode() {
+        DoxygenAwesomeDarkModeToggle.userPreference = !DoxygenAwesomeDarkModeToggle.userPreference
+        this.updateIcon()
+    }
+
+    updateIcon() {
+        if(DoxygenAwesomeDarkModeToggle.darkModeEnabled) {
+            this.innerHTML = DoxygenAwesomeDarkModeToggle.darkModeIcon
+        } else {
+            this.innerHTML = DoxygenAwesomeDarkModeToggle.lightModeIcon
+        }
+    }
+}
+
+customElements.define("doxygen-awesome-dark-mode-toggle", DoxygenAwesomeDarkModeToggle);

docs/doxygen-awesome-css/doxygen-awesome-fragment-copy-button.js

@@ -0,0 +1,85 @@
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2022 - 2023 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+class DoxygenAwesomeFragmentCopyButton extends HTMLElement {
+    constructor() {
+        super();
+        this.onclick=this.copyContent
+    }
+    static title = "Copy to clipboard"
+    static copyIcon = `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><path d="M0 0h24v24H0V0z" fill="none"/><path d="M16 1H4c-1.1 0-2 .9-2 2v14h2V3h12V1zm3 4H8c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h11c1.1 0 2-.9 2-2V7c0-1.1-.9-2-2-2zm0 16H8V7h11v14z"/></svg>`
+    static successIcon = `<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24"><path d="M0 0h24v24H0V0z" fill="none"/><path d="M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41L9 16.17z"/></svg>`
+    static successDuration = 980
+    static init() {
+        $(function() {
+            $(document).ready(function() {
+                if(navigator.clipboard) {
+                    const fragments = document.getElementsByClassName("fragment")
+                    for(const fragment of fragments) {
+                        const fragmentWrapper = document.createElement("div")
+                        fragmentWrapper.className = "doxygen-awesome-fragment-wrapper"
+                        const fragmentCopyButton = document.createElement("doxygen-awesome-fragment-copy-button")
+                        fragmentCopyButton.innerHTML = DoxygenAwesomeFragmentCopyButton.copyIcon
+                        fragmentCopyButton.title = DoxygenAwesomeFragmentCopyButton.title
+                
+                        fragment.parentNode.replaceChild(fragmentWrapper, fragment)
+                        fragmentWrapper.appendChild(fragment)
+                        fragmentWrapper.appendChild(fragmentCopyButton)
+            
+                    }
+                }
+            })
+        })
+    }
+
+
+    copyContent() {
+        const content = this.previousSibling.cloneNode(true)
+        // filter out line number from file listings
+        content.querySelectorAll(".lineno, .ttc").forEach((node) => {
+            node.remove()
+        })
+        let textContent = content.textContent
+        // remove trailing newlines that appear in file listings
+        let numberOfTrailingNewlines = 0
+        while(textContent.charAt(textContent.length - (numberOfTrailingNewlines + 1)) == '\n') {
+            numberOfTrailingNewlines++;
+        }
+        textContent = textContent.substring(0, textContent.length - numberOfTrailingNewlines)
+        navigator.clipboard.writeText(textContent);
+        this.classList.add("success")
+        this.innerHTML = DoxygenAwesomeFragmentCopyButton.successIcon
+        window.setTimeout(() => {
+            this.classList.remove("success")
+            this.innerHTML = DoxygenAwesomeFragmentCopyButton.copyIcon
+        }, DoxygenAwesomeFragmentCopyButton.successDuration);
+    }
+}
+
+customElements.define("doxygen-awesome-fragment-copy-button", DoxygenAwesomeFragmentCopyButton)

docs/doxygen-awesome-css/doxygen-awesome-interactive-toc.js

@@ -0,0 +1,81 @@
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2022 - 2023 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+class DoxygenAwesomeInteractiveToc {
+    static topOffset = 38
+    static hideMobileMenu = true
+    static headers = []
+
+    static init() {
+        window.addEventListener("load", () => {
+            let toc = document.querySelector(".contents > .toc")
+            if(toc) {
+                toc.classList.add("interactive")
+                if(!DoxygenAwesomeInteractiveToc.hideMobileMenu) {
+                    toc.classList.add("open")
+                }
+                document.querySelector(".contents > .toc > h3")?.addEventListener("click", () => {
+                    if(toc.classList.contains("open")) {
+                        toc.classList.remove("open")
+                    } else {
+                        toc.classList.add("open")
+                    }
+                })
+
+                document.querySelectorAll(".contents > .toc > ul a").forEach((node) => {
+                    let id = node.getAttribute("href").substring(1)
+                    DoxygenAwesomeInteractiveToc.headers.push({
+                        node: node,
+                        headerNode: document.getElementById(id)
+                    })
+
+                    document.getElementById("doc-content")?.addEventListener("scroll", () => {
+                        DoxygenAwesomeInteractiveToc.update()
+                    })
+                })
+                DoxygenAwesomeInteractiveToc.update()
+            }
+        })
+    }
+
+    static update() {
+        let active = DoxygenAwesomeInteractiveToc.headers[0]?.node
+        DoxygenAwesomeInteractiveToc.headers.forEach((header) => {
+            let position = header.headerNode.getBoundingClientRect().top
+            header.node.classList.remove("active")
+            header.node.classList.remove("aboveActive")
+            if(position < DoxygenAwesomeInteractiveToc.topOffset) {
+                active = header.node
+                active?.classList.add("aboveActive")
+            }
+        })
+        active?.classList.add("active")
+        active?.classList.remove("aboveActive")
+    }
+}

docs/doxygen-awesome-css/doxygen-awesome-paragraph-link.js

@@ -0,0 +1,51 @@
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2022 - 2023 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+class DoxygenAwesomeParagraphLink {
+    // Icon from https://fonts.google.com/icons
+    // Licensed under the Apache 2.0 license:
+    // https://www.apache.org/licenses/LICENSE-2.0.html
+    static icon = `<svg xmlns="http://www.w3.org/2000/svg" height="20px" viewBox="0 0 24 24" width="20px"><path d="M0 0h24v24H0V0z" fill="none"/><path d="M17 7h-4v2h4c1.65 0 3 1.35 3 3s-1.35 3-3 3h-4v2h4c2.76 0 5-2.24 5-5s-2.24-5-5-5zm-6 8H7c-1.65 0-3-1.35-3-3s1.35-3 3-3h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-2zm-3-4h8v2H8z"/></svg>`
+    static title = "Permanent Link"
+    static init() {
+        $(function() {
+            $(document).ready(function() {
+                document.querySelectorAll(".contents a.anchor[id], .contents .groupheader > a[id]").forEach((node) => {
+                    let anchorlink = document.createElement("a")
+                    anchorlink.setAttribute("href", `#${node.getAttribute("id")}`)
+                    anchorlink.setAttribute("title", DoxygenAwesomeParagraphLink.title)
+                    anchorlink.classList.add("anchorlink")
+                    node.classList.add("anchor")
+                    anchorlink.innerHTML = DoxygenAwesomeParagraphLink.icon
+                    node.parentElement.appendChild(anchorlink)
+                })
+            })
+        })
+    }
+}

docs/doxygen-awesome-css/doxygen-awesome-sidebar-only-darkmode-toggle.css

@@ -0,0 +1,40 @@
+
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2021 - 2023 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+@media screen and (min-width: 768px) {
+
+    #MSearchBox {
+        width: calc(var(--side-nav-fixed-width) - calc(2 * var(--spacing-medium)) - var(--searchbar-height) - 1px);
+    }
+
+    #MSearchField {
+        width: calc(var(--side-nav-fixed-width) - calc(2 * var(--spacing-medium)) - 66px - var(--searchbar-height));
+    }
+}

docs/doxygen-awesome-css/doxygen-awesome-sidebar-only.css

@@ -0,0 +1,116 @@
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2021 - 2023 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+ */
+
+html {
+    /* side nav width. MUST be = `TREEVIEW_WIDTH`.
+     * Make sure it is wide enough to contain the page title (logo + title + version)
+     */
+    --side-nav-fixed-width: 335px;
+    --menu-display: none;
+
+    --top-height: 120px;
+    --toc-sticky-top: -25px;
+    --toc-max-height: calc(100vh - 2 * var(--spacing-medium) - 25px);
+}
+
+#projectname {
+    white-space: nowrap;
+}
+
+
+@media screen and (min-width: 768px) {
+    html {
+        --searchbar-background: var(--page-background-color);
+    }
+
+    #side-nav {
+        min-width: var(--side-nav-fixed-width);
+        max-width: var(--side-nav-fixed-width);
+        top: var(--top-height);
+        overflow: visible;
+    }
+
+    #nav-tree, #side-nav {
+        height: calc(100vh - var(--top-height)) !important;
+    }
+
+    #nav-tree {
+        padding: 0;
+    }
+
+    #top {
+        display: block;
+        border-bottom: none;
+        height: var(--top-height);
+        margin-bottom: calc(0px - var(--top-height));
+        max-width: var(--side-nav-fixed-width);
+        overflow: hidden;
+        background: var(--side-nav-background);
+    }
+    #main-nav {
+        float: left;
+        padding-right: 0;
+    }
+
+    .ui-resizable-handle {
+        cursor: default;
+        width: 1px !important;
+        background: var(--separator-color);
+        box-shadow: 0 calc(-2 * var(--top-height)) 0 0 var(--separator-color);
+    }
+
+    #nav-path {
+        position: fixed;
+        right: 0;
+        left: var(--side-nav-fixed-width);
+        bottom: 0;
+        width: auto;
+    }
+
+    #doc-content {
+        height: calc(100vh - 31px) !important;
+        padding-bottom: calc(3 * var(--spacing-large));
+        padding-top: calc(var(--top-height) - 80px);
+        box-sizing: border-box;
+        margin-left: var(--side-nav-fixed-width) !important;
+    }
+
+    #MSearchBox {
+        width: calc(var(--side-nav-fixed-width) - calc(2 * var(--spacing-medium)));
+    }
+
+    #MSearchField {
+        width: calc(var(--side-nav-fixed-width) - calc(2 * var(--spacing-medium)) - 65px);
+    }
+
+    #MSearchResultsWindow {
+        left: var(--spacing-medium) !important;
+        right: auto;
+    }
+}

docs/doxygen-awesome-css/doxygen-awesome-tabs.js

@@ -0,0 +1,90 @@
+/**
+
+Doxygen Awesome
+https://github.com/jothepro/doxygen-awesome-css
+
+MIT License
+
+Copyright (c) 2023 jothepro
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+class DoxygenAwesomeTabs {
+
+    static init() {
+        window.addEventListener("load", () => {
+            document.querySelectorAll(".tabbed:not(:empty)").forEach((tabbed, tabbedIndex) => {
+                let tabLinkList = []           
+                tabbed.querySelectorAll(":scope > ul > li").forEach((tab, tabIndex) => {
+                    tab.id = "tab_" + tabbedIndex + "_" + tabIndex
+                    let header = tab.querySelector(".tab-title")
+                    let tabLink = document.createElement("button")
+                    tabLink.classList.add("tab-button")
+                    tabLink.appendChild(header)
+                    header.title = header.textContent
+                    tabLink.addEventListener("click", () => {
+                        tabbed.querySelectorAll(":scope > ul > li").forEach((tab) => {
+                            tab.classList.remove("selected")
+                        })
+                        tabLinkList.forEach((tabLink) => {
+                            tabLink.classList.remove("active")
+                        })
+                        tab.classList.add("selected")
+                        tabLink.classList.add("active")
+                    })
+                    tabLinkList.push(tabLink)
+                    if(tabIndex == 0) {
+                        tab.classList.add("selected")
+                        tabLink.classList.add("active")
+                    }
+                })
+                let tabsOverview = document.createElement("div")
+                tabsOverview.classList.add("tabs-overview")
+                let tabsOverviewContainer = document.createElement("div")
+                tabsOverviewContainer.classList.add("tabs-overview-container")
+                tabLinkList.forEach((tabLink) => {
+                    tabsOverview.appendChild(tabLink)
+                })
+                tabsOverviewContainer.appendChild(tabsOverview)
+                tabbed.before(tabsOverviewContainer)
+
+                function resize() {
+                    let maxTabHeight = 0
+                    tabbed.querySelectorAll(":scope > ul > li").forEach((tab, tabIndex) => {
+                        let visibility = tab.style.display
+                        tab.style.display = "block"
+                        maxTabHeight = Math.max(tab.offsetHeight, maxTabHeight)
+                        tab.style.display = visibility
+                    })
+                    tabbed.style.height = `${maxTabHeight + 10}px`
+                }
+
+                resize()
+                new ResizeObserver(resize).observe(tabbed)
+            })
+        })
+        
+    }
+
+    static resize(tabbed) {
+        
+    }
+}

docs/layout.xml

@@ -0,0 +1,247 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<doxygenlayout version="1.0">
+  <!-- Generated by doxygen 1.11.0 -->
+  <!-- Navigation index tabs for HTML output -->
+  <navindex>
+    <tab type="mainpage" visible="yes" title="Home"/>
+    <tab type="usergroup" title="Documentation">
+      <!-- Put here all custom documentation pages -->
+    </tab>
+    <tab type="usergroup" visible="yes" title="Reference">
+      <tab type="namespacelist" visible="yes" title="" intro=""/>
+      <tab type="namespacemembers" visible="yes" title="" intro=""/>
+      <tab type="classlist" visible="yes" title="" intro=""/>
+      <tab type="classindex" visible="$ALPHABETICAL_INDEX" title=""/>
+      <tab type="hierarchy" visible="yes" title="" intro=""/>
+      <tab type="classmembers" visible="yes" title="" intro=""/>
+      <tab type="filelist" visible="yes" title="" intro=""/>
+      <tab type="globals" visible="yes" title="" intro=""/>
+      <tab type="examples" visible="yes" title="" intro=""/>
+      <tab type="pages" visible="no" title="" intro=""/>
+    </tab>
+  </navindex>
+
+  <!-- Layout definition for a class page -->
+  <class>
+    <briefdescription visible="yes"/>
+    <includes visible="$SHOW_HEADERFILE"/>
+    <inheritancegraph visible="yes"/>
+    <collaborationgraph visible="yes"/>
+    <memberdecl>
+      <nestedclasses visible="yes" title=""/>
+      <publictypes title=""/>
+      <services title=""/>
+      <interfaces title=""/>
+      <publicslots title=""/>
+      <signals title=""/>
+      <publicmethods title=""/>
+      <publicstaticmethods title=""/>
+      <publicattributes title=""/>
+      <publicstaticattributes title=""/>
+      <protectedtypes title=""/>
+      <protectedslots title=""/>
+      <protectedmethods title=""/>
+      <protectedstaticmethods title=""/>
+      <protectedattributes title=""/>
+      <protectedstaticattributes title=""/>
+      <packagetypes title=""/>
+      <packagemethods title=""/>
+      <packagestaticmethods title=""/>
+      <packageattributes title=""/>
+      <packagestaticattributes title=""/>
+      <properties title=""/>
+      <events title=""/>
+      <privatetypes title=""/>
+      <privateslots title=""/>
+      <privatemethods title=""/>
+      <privatestaticmethods title=""/>
+      <privateattributes title=""/>
+      <privatestaticattributes title=""/>
+      <friends title=""/>
+      <related title="" subtitle=""/>
+      <membergroups visible="yes"/>
+    </memberdecl>
+    <detaileddescription title=""/>
+    <memberdef>
+      <inlineclasses title=""/>
+      <typedefs title=""/>
+      <enums title=""/>
+      <services title=""/>
+      <interfaces title=""/>
+      <constructors title=""/>
+      <functions title=""/>
+      <related title=""/>
+      <variables title=""/>
+      <properties title=""/>
+      <events title=""/>
+    </memberdef>
+    <allmemberslink visible="yes"/>
+    <usedfiles visible="$SHOW_USED_FILES"/>
+    <authorsection visible="yes"/>
+  </class>
+
+  <!-- Layout definition for a namespace page -->
+  <namespace>
+    <briefdescription visible="yes"/>
+    <memberdecl>
+      <nestednamespaces visible="yes" title=""/>
+      <constantgroups visible="yes" title=""/>
+      <interfaces visible="yes" title=""/>
+      <classes visible="yes" title=""/>
+      <concepts visible="yes" title=""/>
+      <structs visible="yes" title=""/>
+      <exceptions visible="yes" title=""/>
+      <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
+      <enums title=""/>
+      <functions title=""/>
+      <variables title=""/>
+      <properties title=""/>
+      <membergroups visible="yes"/>
+    </memberdecl>
+    <detaileddescription title=""/>
+    <memberdef>
+      <inlineclasses title=""/>
+      <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
+      <enums title=""/>
+      <functions title=""/>
+      <variables title=""/>
+      <properties title=""/>
+    </memberdef>
+    <authorsection visible="yes"/>
+  </namespace>
+
+  <!-- Layout definition for a concept page -->
+  <concept>
+    <briefdescription visible="yes"/>
+    <includes visible="$SHOW_HEADERFILE"/>
+    <definition visible="yes" title=""/>
+    <detaileddescription title=""/>
+    <authorsection visible="yes"/>
+  </concept>
+
+  <!-- Layout definition for a file page -->
+  <file>
+    <briefdescription visible="yes"/>
+    <includes visible="$SHOW_INCLUDE_FILES"/>
+    <includegraph visible="yes"/>
+    <includedbygraph visible="yes"/>
+    <sourcelink visible="yes"/>
+    <memberdecl>
+      <interfaces visible="yes" title=""/>
+      <classes visible="yes" title=""/>
+      <structs visible="yes" title=""/>
+      <exceptions visible="yes" title=""/>
+      <namespaces visible="yes" title=""/>
+      <concepts visible="yes" title=""/>
+      <constantgroups visible="yes" title=""/>
+      <defines title=""/>
+      <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
+      <enums title=""/>
+      <functions title=""/>
+      <variables title=""/>
+      <properties title=""/>
+      <membergroups visible="yes"/>
+    </memberdecl>
+    <detaileddescription title=""/>
+    <memberdef>
+      <inlineclasses title=""/>
+      <defines title=""/>
+      <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
+      <enums title=""/>
+      <functions title=""/>
+      <variables title=""/>
+      <properties title=""/>
+    </memberdef>
+    <authorsection/>
+  </file>
+
+  <!-- Layout definition for a group page -->
+  <group>
+    <briefdescription visible="yes"/>
+    <groupgraph visible="yes"/>
+    <memberdecl>
+      <nestedgroups visible="yes" title=""/>
+      <modules visible="yes" title=""/>
+      <dirs visible="yes" title=""/>
+      <files visible="yes" title=""/>
+      <namespaces visible="yes" title=""/>
+      <concepts visible="yes" title=""/>
+      <classes visible="yes" title=""/>
+      <defines title=""/>
+      <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
+      <enums title=""/>
+      <enumvalues title=""/>
+      <functions title=""/>
+      <variables title=""/>
+      <signals title=""/>
+      <publicslots title=""/>
+      <protectedslots title=""/>
+      <privateslots title=""/>
+      <events title=""/>
+      <properties title=""/>
+      <friends title=""/>
+      <membergroups visible="yes"/>
+    </memberdecl>
+    <detaileddescription title=""/>
+    <memberdef>
+      <pagedocs/>
+      <inlineclasses title=""/>
+      <defines title=""/>
+      <typedefs title=""/>
+      <sequences title=""/>
+      <dictionaries title=""/>
+      <enums title=""/>
+      <enumvalues title=""/>
+      <functions title=""/>
+      <variables title=""/>
+      <signals title=""/>
+      <publicslots title=""/>
+      <protectedslots title=""/>
+      <privateslots title=""/>
+      <events title=""/>
+      <properties title=""/>
+      <friends title=""/>
+    </memberdef>
+    <authorsection visible="yes"/>
+  </group>
+
+  <!-- Layout definition for a C++20 module page -->
+  <module>
+    <briefdescription visible="yes"/>
+    <exportedmodules visible="yes"/>
+    <memberdecl>
+      <concepts visible="yes" title=""/>
+      <classes visible="yes" title=""/>
+      <enums title=""/>
+      <typedefs title=""/>
+      <functions title=""/>
+      <variables title=""/>
+      <membergroups title=""/>
+    </memberdecl>
+    <detaileddescription title=""/>
+    <memberdecl>
+      <files visible="yes"/>
+    </memberdecl>
+  </module>
+
+  <!-- Layout definition for a directory page -->
+  <directory>
+    <briefdescription visible="yes"/>
+    <directorygraph visible="yes"/>
+    <memberdecl>
+      <dirs visible="yes"/>
+      <files visible="yes"/>
+    </memberdecl>
+    <detaileddescription title=""/>
+  </directory>
+</doxygenlayout>

examples/src/cli.cpp

@@ -5,7 +5,7 @@
 
 struct SomeStruct {
   static_assert(utempl::OpenStruct<SomeStruct>());
-  utempl::FieldAttribute<std::string, cserver::cli::Name<"field,f">> field;
+  utempl::FieldAttribute<std::string, utempl::TypeList<cserver::cli::Name<"field,f">>> field;
   static_assert(utempl::CloseStruct<SomeStruct>());
 };
 

include/cserver/components/cli/manager.hpp

@@ -74,10 +74,11 @@ struct Manager {
         constexpr std::string_view nname = nnname.substr(0, nnname.find(','));
         utempl::ConstexprString<nname.size() + 1> name;
         std::ranges::copy_n(nname.begin(), nname.size(), name.begin());
+        name.data[nname.size()] = '\0';
         if(this->variableMap.count(name.begin())) {
           return this->variableMap[name.begin()].template as<typename decltype(fieldConfig)::Type>();
         };
-        throw std::runtime_error(fmt::format("Not found cli option {}", name));
+        throw std::runtime_error(fmt::format("Not found cli option {}", name.begin()));
       }()...};
     } | utempl::kSeq<utempl::kTupleSize<decltype(fieldConfigs)>>;
   };

include/cserver/engine/components.hpp

@@ -2,6 +2,7 @@
 #include <cxxabi.h>
 
 #include <boost/core/demangle.hpp>
+#include <cserver/components/logger.hpp>
 #include <cserver/engine/basic/task_processor.hpp>
 #include <cserver/engine/coroutine.hpp>
 #include <utempl/loopholes/counter.hpp>
@@ -187,21 +188,46 @@ inline constexpr auto InitComponents(T& ccontext, int ac, const char** av) -> vo
   static utempl::Tuple inited =
       TransformDependencyGraphToTupleWithDependenciesToInitedFlagChanges<AsyncConditionVariable, DependencyGraph>(ioContext);
   auto work = make_work_guard(ioContext);
-  []<std::size_t... Is>(std::index_sequence<Is...>) {
+  [](auto... is) {
     // clang-format off
-    (boost::asio::co_spawn(ioContext, []() -> cserver::Task<> {
-      using Current = decltype(Get<Is>(decltype(T::kUtils)::kComponentConfigs));
-      auto& dependencies = Get<Is>(inited);
+    (boost::asio::co_spawn(ioContext, [](auto is) -> cserver::Task<> {
+      using Current = decltype(Get<is>(decltype(T::kUtils)::kComponentConfigs));
+      auto& dependencies = Get<is>(inited);
+      constexpr auto logLevel = T::kConfig.template Get<"logging">().template Get<"level">();
+      if constexpr(logLevel == LoggingLevel::kTrace) {
+        fmt::println("[TRACE] Started coroutine for initialisation component {} with flag address {}", 
+                     static_cast<std::string_view>(Current::kName),
+                     static_cast<void*>(&GetInitFlagFor<AsyncConditionVariable, is>(ioContext)));
+      };
       for(auto* flag : dependencies) {
+        if constexpr(logLevel == LoggingLevel::kTrace) {
+          fmt::println("[TRACE] {} Component: Waiting flag on address {}",
+                       static_cast<std::string_view>(Current::kName),
+                       static_cast<void*>(flag));
+        };
         co_await flag->AsyncWait();
+        if constexpr(logLevel == LoggingLevel::kTrace) {
+          fmt::println("[TRACE] {} Component: Waited flag on address {}",
+                       static_cast<std::string_view>(Current::kName),
+                       static_cast<void*>(flag));
+        };
+
       };
       try {
         if constexpr(Current::kName == cliArgs) {
           ServiceContextForComponentWithCliArgs<Current, T> currentContext{context, argc, argv};
-          Get<Is>(context.storage).emplace(currentContext);
+          if constexpr(logLevel == LoggingLevel::kTrace) {
+            fmt::println("[TRACE] {} Component: call constructor with cli args",
+                         static_cast<std::string_view>(Current::kName));
+          };
+          Get<is>(context.storage).emplace(currentContext);
         } else {
           ServiceContextForComponent<Current, T> currentContext{context};
-          Get<Is>(context.storage).emplace(currentContext);
+          if constexpr(logLevel == LoggingLevel::kTrace) {
+            fmt::println("[TRACE] {} Component: call constructor",
+                         static_cast<std::string_view>(Current::kName));
+          };
+          Get<is>(context.storage).emplace(currentContext);
         };
       } catch(std::exception& error) {
         auto typeName = boost::core::demangle(__cxxabiv1::__cxa_current_exception_type()->name());
@@ -217,14 +243,18 @@ inline constexpr auto InitComponents(T& ccontext, int ac, const char** av) -> vo
                      typeName);
         ioContext.stop();
       };
-      auto& componentInitFlag = GetInitFlagFor<AsyncConditionVariable, Is>(ioContext);
-      componentInitFlag.NotifyAll();
-      if constexpr(requires{Get<Is>(context.storage)->Run();}) {
-        Get<Is>(context.storage)->Run();
+      auto& componentInitFlag = GetInitFlagFor<AsyncConditionVariable, is>(ioContext);
+      if constexpr(logLevel == LoggingLevel::kTrace) {
+        fmt::println("[TRACE] {} Component: notify",
+                      static_cast<std::string_view>(Current::kName));
       };
-    }(), boost::asio::detached), ...);
+      componentInitFlag.NotifyAll();
+      if constexpr(requires{Get<is>(context.storage)->Run();}) {
+        Get<is>(context.storage)->Run();
+      };
+    }(is), boost::asio::detached), ...);
     // clang-format on
-  }(std::make_index_sequence<utempl::kTupleSize<decltype(DependencyGraph)>>());
+  } | utempl::kSeq<utempl::kTupleSize<decltype(DependencyGraph)>>;
 };
 
 template <typename... Ts>
@@ -334,9 +364,26 @@ namespace impl {
 template <typename Current, std::size_t I>
 struct DependencyInfoKey {};
 
+template <auto F>
+consteval auto IsConstantImpl(...) {
+  return false;
+};
+
+template <auto F, auto = (F(), 1)>
+consteval auto IsConstantImpl(bool) {
+  return true;
+};
+
+template <auto F>
+consteval auto IsConstant() -> bool {
+  return IsConstantImpl<F>(true);  // NOLINT
+};
+
 template <typename T, auto... Args>
 inline constexpr auto Use() {
-  std::ignore = T{Args...};
+  std::ignore = IsConstant<[] {
+    T{Args...};
+  }>();
 };
 
 template <typename...>