diff --git a/docs/src/individual-docs/languages/cplusplus.md b/docs/src/individual-docs/languages/cplusplus.md
index d3615c80f..f8c1c8138 100644
--- a/docs/src/individual-docs/languages/cplusplus.md
+++ b/docs/src/individual-docs/languages/cplusplus.md
@@ -1,4 +1,246 @@
+## Getting Started
 
+The easiest way to get started with C++ is to simply enable it:
+
+```nix
+languages.cplusplus = {
+  enable = true;
+};
+```
+
+This will automatically:
+
+- Use `clang` as the default C++ package
+- Install it along with CMake and other tools
+
+Alternatively, you can manually specify packages:
+
+```nix
+languages.cplusplus = {
+  enable = true;
+  package = pkgs.stdenv.cc;
+};
+```
+
+## Setting up the [Conan](https://conan.io/) package manager
+
+Add conan-flake to your inputs:
+
+```shell-session
+$ devenv inputs add conan-flake git+https://codeberg.org/tarcisio/conan-flake
+```
+
+The conan-flake module bridges the gap between Nix and Conan, supporting a declarative configuration style. For instance, for a user profile configuration like the following:
+
+```ini
+[settings]
+build_type=Debug
+compiler.cppstd=14
+
+[platform_tool_requires]
+cmake/X.Y.Z
+```
+
+There correspond the following conan-flake options:
+
+```nix
+{
+  compilerCppStd = "14";
+
+  profiles = {
+    settings.build_type = "Debug";
+
+    platformToolRequires = {
+      cmake = pkgs.cmake.version;
+    };
+  };
+
+  devShell = {
+    # Programs you want to make available in the shell:
+    tools = { inherit (pkgs) cmake; };
+  };
+}
+```
+
+You can check [the list of available options](/reference/options.md#languagescplusplusconanenable). The [`languages.cplusplus.conan.config`](/reference/options.md#languagescplusplusconanconfig) option, however, maps the whole of the options available in the [conan-flake](https://flake.parts/options/conan-flake.html) module — check the [official module documentation](https://flake.parts/options/conan-flake.html#options) and see the examples in [conan-flake's README file](https://codeberg.org/tarcisio/conan-flake/src/branch/main/README.md) to help you setting up.
+
+Config the `devenv.nix` file accordingly. For example, the above is equivalent to the following:
+
+```nix
+languages.cplusplus = {
+  enable = true;
+  conan = {
+    enable = true;
+    install.enable = true;
+    config = {
+      profiles.settings.build_type = "Debug";
+      compilerCppStd = "14";
+    };
+  };
+};
+```
+
+By default, when Conan is enabled:
+
+- The default C++ package is set to `config.stdenv.cc`
+- Conan is configured to use the same CMake available in the developmemnt shell; as can be seen from the above example, the devenv integration automatically takes care of the CMake part by default, and the `profiles.platformToolRequires` and `devShell.tools` options are not required to be set explicitly in the `languages.cplusplus.conan.config` namespace
+
+### In Action:
+
+```shell-session
+$ devenv shell
+Building shell ...
+Entering shell ...
+
+conan profile show # This would show the configured profile.
+```
+
+## Additional Examples
+
+### LLVM-based C++ Toolchain
+
+If you would like to integrate with the LLVM compiler infrastructure:
+
+```nix
+{ pkgs, config, lib, ... }:
+let
+  inherit (lib) getExe;
+  cfg = config.languages.cplusplus.conan.config;
+  c = "'c': '${getExe cfg.stdenv.cc}'";
+  cpp = "'cpp': '${builtins.dirOf (getExe cfg.stdenv.cc)}/clang++'";
+in
+{
+  languages.cplusplus = {
+    enable = true;
+    conan = {
+      enable = true;
+      install.enable = true;
+      config = {
+        profiles = {
+          settings.build_type = "Release";
+          conf = {
+            "tools.build:compiler_executables" = "{${c}, ${cpp}}";
+          };
+        };
+        stdenv = pkgs.overrideCC
+          (
+            pkgs.llvmPackages.libcxxStdenv.override {
+              targetPlatform.useLLVM = true;
+              targetPlatform.linker = "lld";
+            }
+          )
+          pkgs.llvmPackages.clangUseLLVM;
+        # By default: compiler.libcxx=libstdc++11, so set it:
+        compilerLibCxx = "libc++";
+      };
+    };
+  };
+}
+```
+
+Or even:
+
+```nix
+{ pkgs, config, lib, ... }:
+let
+  inherit (lib) getExe;
+  cfg = config.languages.cplusplus.conan.config;
+  c = "'c': '${getExe cfg.stdenv.cc}'";
+  cpp = "'cpp': '${builtins.dirOf (getExe cfg.stdenv.cc)}/clang++'";
+in
+{
+  stdenv = pkgs.overrideCC
+    (
+      pkgs.llvmPackages.libcxxStdenv.override {
+        targetPlatform.useLLVM = true;
+        targetPlatform.linker = "lld";
+      }
+    )
+    pkgs.llvmPackages.clangUseLLVM;
+
+  languages.cplusplus = {
+    enable = true;
+    conan = {
+      enable = true;
+      install.enable = true;
+      config = {
+        profiles = {
+          settings.build_type = "Release";
+          conf = {
+            "tools.build:compiler_executables" = "{${c}, ${cpp}}";
+          };
+        };
+        # By default: compiler.libcxx=libstdc++11, so set it:
+        compilerLibCxx = "libc++";
+      };
+    };
+  };
+}
+```
+
+In this second use case:
+
+- By default, conan-flake is configured using the same stdenv as devenv's (that is, `config.stdenv`)
+
+### In Action:
+
+```shell-session
+$ devenv shell
+Building shell ...
+Entering shell ...
+
+conan profile show # This would show the configured profile.
+conan create . --build=missing # This would create and test the current package.
+```
+
+### A local-recipe-index remote
+
+With [local-recipe-index](https://docs.conan.io/2/tutorial/conan_repositories/setup_local_recipes_index.html) remotes it's possible to declare dependencies from a simplified local index structure:
+
+```nix
+{
+  languages.cplusplus = {
+    enable = true;
+
+    conan = {
+      enable = true;
+      install.enable = true;
+
+      config = {
+        profiles.settings.build_type = "Release";
+        compilerCppStd = "17";
+
+        remotes.local = {
+          url = "./repo";
+          local = true;
+          allowedPackages = [
+            "hello-world/0.0.1.cci.20260428"
+          ];
+        };
+
+        offline = true;
+      };
+    };
+  };
+}
+```
+
+The options in the `languages.cplusplus.conan.config` namespace:
+
+- `remotes.local.url`: is taken as a relative path to the root of the configuration
+- `offline`: enable only local remotes (that is, only of local-recipe-index type)
+
+### In Action:
+
+```shell-session
+$ devenv shell
+Building shell ...
+Entering shell ...
+
+conan profile show # This would show the configured profile.
+conan remote list # This would list the configured remotes.
+conan create . --build=missing # This would create and test the current package.
+```
 
 [comment]: # (Please add your documentation on top of this line)
 
diff --git a/docs/src/languages/cplusplus.md b/docs/src/languages/cplusplus.md
index a145d67f7..3c494551a 100644
--- a/docs/src/languages/cplusplus.md
+++ b/docs/src/languages/cplusplus.md
@@ -1,5 +1,247 @@
 [comment]: # (Do not edit this file as it is autogenerated. Go to docs/individual-docs if you want to make edits.)
+## Getting Started
 
+The easiest way to get started with C++ is to simply enable it:
+
+```nix
+languages.cplusplus = {
+  enable = true;
+};
+```
+
+This will automatically:
+
+- Use `clang` as the default C++ package
+- Install it along with CMake and other tools
+
+Alternatively, you can manually specify packages:
+
+```nix
+languages.cplusplus = {
+  enable = true;
+  package = pkgs.stdenv.cc;
+};
+```
+
+## Setting up the [Conan](https://conan.io/) package manager
+
+Add conan-flake to your inputs:
+
+```shell-session
+$ devenv inputs add conan-flake git+https://codeberg.org/tarcisio/conan-flake
+```
+
+The conan-flake module bridges the gap between Nix and Conan, supporting a declarative configuration style. For instance, for a user profile configuration like the following:
+
+```ini
+[settings]
+build_type=Debug
+compiler.cppstd=14
+
+[platform_tool_requires]
+cmake/X.Y.Z
+```
+
+There correspond the following conan-flake options:
+
+```nix
+{
+  compilerCppStd = "14";
+
+  profiles = {
+    settings.build_type = "Debug";
+
+    platformToolRequires = {
+      cmake = pkgs.cmake.version;
+    };
+  };
+
+  devShell = {
+    # Programs you want to make available in the shell:
+    tools = { inherit (pkgs) cmake; };
+  };
+}
+```
+
+You can check [the list of available options](/reference/options.md#languagescplusplusconanenable). The [`languages.cplusplus.conan.config`](/reference/options.md#languagescplusplusconanconfig) option, however, maps the whole of the options available in the [conan-flake](https://flake.parts/options/conan-flake.html) module — check the [official module documentation](https://flake.parts/options/conan-flake.html#options) and see the examples in [conan-flake's README file](https://codeberg.org/tarcisio/conan-flake/src/branch/main/README.md) to help you setting up.
+
+Config the `devenv.nix` file accordingly. For example, the above is equivalent to the following:
+
+```nix
+languages.cplusplus = {
+  enable = true;
+  conan = {
+    enable = true;
+    install.enable = true;
+    config = {
+      profiles.settings.build_type = "Debug";
+      compilerCppStd = "14";
+    };
+  };
+};
+```
+
+By default, when Conan is enabled:
+
+- The default C++ package is set to `config.stdenv.cc`
+- Conan is configured to use the same CMake available in the developmemnt shell; as can be seen from the above example, the devenv integration automatically takes care of the CMake part by default, and the `profiles.platformToolRequires` and `devShell.tools` options are not required to be set explicitly in the `languages.cplusplus.conan.config` namespace
+
+### In Action:
+
+```shell-session
+$ devenv shell
+Building shell ...
+Entering shell ...
+
+conan profile show # This would show the configured profile.
+```
+
+## Additional Examples
+
+### LLVM-based C++ Toolchain
+
+If you would like to integrate with the LLVM compiler infrastructure:
+
+```nix
+{ pkgs, config, lib, ... }:
+let
+  inherit (lib) getExe;
+  cfg = config.languages.cplusplus.conan.config;
+  c = "'c': '${getExe cfg.stdenv.cc}'";
+  cpp = "'cpp': '${builtins.dirOf (getExe cfg.stdenv.cc)}/clang++'";
+in
+{
+  languages.cplusplus = {
+    enable = true;
+    conan = {
+      enable = true;
+      install.enable = true;
+      config = {
+        profiles = {
+          settings.build_type = "Release";
+          conf = {
+            "tools.build:compiler_executables" = "{${c}, ${cpp}}";
+          };
+        };
+        stdenv = pkgs.overrideCC
+          (
+            pkgs.llvmPackages.libcxxStdenv.override {
+              targetPlatform.useLLVM = true;
+              targetPlatform.linker = "lld";
+            }
+          )
+          pkgs.llvmPackages.clangUseLLVM;
+        # By default: compiler.libcxx=libstdc++11, so set it:
+        compilerLibCxx = "libc++";
+      };
+    };
+  };
+}
+```
+
+Or even:
+
+```nix
+{ pkgs, config, lib, ... }:
+let
+  inherit (lib) getExe;
+  cfg = config.languages.cplusplus.conan.config;
+  c = "'c': '${getExe cfg.stdenv.cc}'";
+  cpp = "'cpp': '${builtins.dirOf (getExe cfg.stdenv.cc)}/clang++'";
+in
+{
+  stdenv = pkgs.overrideCC
+    (
+      pkgs.llvmPackages.libcxxStdenv.override {
+        targetPlatform.useLLVM = true;
+        targetPlatform.linker = "lld";
+      }
+    )
+    pkgs.llvmPackages.clangUseLLVM;
+
+  languages.cplusplus = {
+    enable = true;
+    conan = {
+      enable = true;
+      install.enable = true;
+      config = {
+        profiles = {
+          settings.build_type = "Release";
+          conf = {
+            "tools.build:compiler_executables" = "{${c}, ${cpp}}";
+          };
+        };
+        # By default: compiler.libcxx=libstdc++11, so set it:
+        compilerLibCxx = "libc++";
+      };
+    };
+  };
+}
+```
+
+In this second use case:
+
+- By default, conan-flake is configured using the same stdenv as devenv's (that is, `config.stdenv`)
+
+### In Action:
+
+```shell-session
+$ devenv shell
+Building shell ...
+Entering shell ...
+
+conan profile show # This would show the configured profile.
+conan create . --build=missing # This would create and test the current package.
+```
+
+### A local-recipe-index remote
+
+With [local-recipe-index](https://docs.conan.io/2/tutorial/conan_repositories/setup_local_recipes_index.html) remotes it's possible to declare dependencies from a simplified local index structure:
+
+```nix
+{
+  languages.cplusplus = {
+    enable = true;
+
+    conan = {
+      enable = true;
+      install.enable = true;
+
+      config = {
+        profiles.settings.build_type = "Release";
+        compilerCppStd = "17";
+
+        remotes.local = {
+          url = "./repo";
+          local = true;
+          allowedPackages = [
+            "hello-world/0.0.1.cci.20260428"
+          ];
+        };
+
+        offline = true;
+      };
+    };
+  };
+}
+```
+
+The options in the `languages.cplusplus.conan.config` namespace:
+
+- `remotes.local.url`: is taken as a relative path to the root of the configuration
+- `offline`: enable only local remotes (that is, only of local-recipe-index type)
+
+### In Action:
+
+```shell-session
+$ devenv shell
+Building shell ...
+Entering shell ...
+
+conan profile show # This would show the configured profile.
+conan remote list # This would list the configured remotes.
+conan create . --build=missing # This would create and test the current package.
+```
 
 [comment]: # (Please add your documentation on top of this line)
 
@@ -7,6 +249,8 @@
 
 ### languages\.cplusplus\.enable
 
+
+
 Whether to enable tools for C++ development\.
 
 
@@ -24,6 +268,188 @@ false
 
 
 
+*Example:*
+
+```nix
+true
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.package
+
+
+
+The C++ compiler to use\.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.clang
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.cmake
+
+Configuration for cmake
+
+
+
+*Type:*
+submodule
+
+
+
+*Default:*
+
+```nix
+{ }
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.cmake\.package
+
+
+
+The CMake package to use\.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.cmake
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.conan\.enable
+
+
+
+Whether to enable install conan\.
+
+
+
+*Type:*
+boolean
+
+
+
+*Default:*
+
+```nix
+false
+```
+
+
+
+*Example:*
+
+```nix
+true
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.conan\.package
+
+
+
+The conan package to use\.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.conan
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.conan\.config
+
+
+
+conan configuration\.
+
+
+
+*Type:*
+attribute set
+
+
+
+*Default:*
+
+```nix
+{ }
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.conan\.install\.enable
+
+
+
+Whether to enable conan install during devenv initialisation\.
+
+
+
+*Type:*
+boolean
+
+
+
+*Default:*
+
+```nix
+false
+```
+
+
+
 *Example:*
 
 ```nix
@@ -88,3 +514,56 @@ pkgs.ccls
 
 *Declared by:*
  - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.tools\.enable
+
+
+
+Whether to enable Standalone command line tools for C++ development\.
+
+
+
+*Type:*
+boolean
+
+
+
+*Default:*
+Enabled by default for clang-based compilers
+
+
+
+*Example:*
+
+```nix
+true
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+### languages\.cplusplus\.tools\.package
+
+
+
+The C++ command line tools package to use\.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.clang-tools
+```
+
+*Declared by:*
+ - [https://github\.com/cachix/devenv/blob/main/src/modules/languages/cplusplus\.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
diff --git a/docs/src/reference/options.md b/docs/src/reference/options.md
index a3962593e..cb206d2b1 100644
--- a/docs/src/reference/options.md
+++ b/docs/src/reference/options.md
@@ -15045,6 +15045,190 @@ false
 
 
 
+*Example:*
+
+```nix
+true
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.package
+
+
+
+The C++ compiler to use.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.clang
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.cmake
+
+
+
+Configuration for cmake
+
+
+
+*Type:*
+submodule
+
+
+
+*Default:*
+
+```nix
+{ }
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.cmake.package
+
+
+
+The CMake package to use.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.cmake
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.conan.enable
+
+
+
+Whether to enable install conan.
+
+
+
+*Type:*
+boolean
+
+
+
+*Default:*
+
+```nix
+false
+```
+
+
+
+*Example:*
+
+```nix
+true
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.conan.package
+
+
+
+The conan package to use.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.conan
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.conan.config
+
+
+
+conan configuration.
+
+
+
+*Type:*
+attribute set
+
+
+
+*Default:*
+
+```nix
+{ }
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.conan.install.enable
+
+
+
+Whether to enable conan install during devenv initialisation.
+
+
+
+*Type:*
+boolean
+
+
+
+*Default:*
+
+```nix
+false
+```
+
+
+
 *Example:*
 
 ```nix
@@ -15112,6 +15296,59 @@ pkgs.ccls
 
 
 
+## languages.cplusplus.tools.enable
+
+
+
+Whether to enable Standalone command line tools for C++ development.
+
+
+
+*Type:*
+boolean
+
+
+
+*Default:*
+Enabled by default for clang-based compilers
+
+
+
+*Example:*
+
+```nix
+true
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
+## languages.cplusplus.tools.package
+
+
+
+The C++ command line tools package to use.
+
+
+
+*Type:*
+package
+
+
+
+*Default:*
+
+```nix
+pkgs.clang-tools
+```
+
+*Declared by:*
+ - [https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix](https://github.com/cachix/devenv/blob/main/src/modules/languages/cplusplus.nix)
+
+
+
 ## languages.crystal.enable
 
 
diff --git a/src/modules/languages/cplusplus.nix b/src/modules/languages/cplusplus.nix
index e67933276..8291198f0 100644
--- a/src/modules/languages/cplusplus.nix
+++ b/src/modules/languages/cplusplus.nix
@@ -2,11 +2,81 @@
 
 let
   cfg = config.languages.cplusplus;
+
+  inputArgs = {
+    name = "conan-flake";
+    url = "git+https://codeberg.org/tarcisio/conan-flake";
+    attribute = "conan";
+  };
+
+  # When enabled, use getInput (throws helpful error if missing)
+  # Otherwise, use tryGetInput to populate the docs when the input is available.
+  conan-flake =
+    if cfg.conan.enable then config.lib.getInput inputArgs else config.lib.tryGetInput inputArgs;
+
+  # Determine config root: prefer devenv.root, fallback to git.root
+  configRoot = if config.devenv.root != null then config.devenv.root else config.git.root;
+
+  conanSubmodule =
+    if conan-flake != null then
+    # We automatically configure Conan with the correct tree root for the project.
+      conan-flake.lib.submoduleWith pkgs { inherit configRoot; }
+    else
+      lib.types.attrs;
 in
 {
   options.languages.cplusplus = {
     enable = lib.mkEnableOption "tools for C++ development";
 
+    package = lib.mkOption {
+      type = lib.types.package;
+      default = pkgs.clang;
+      defaultText = lib.literalExpression "pkgs.clang";
+      description = "The C++ compiler to use.";
+    };
+
+    cmake = lib.mkOption {
+      type = lib.types.submodule {
+        options.package = lib.mkOption {
+          type = lib.types.package;
+          default = pkgs.cmake;
+          defaultText = lib.literalExpression "pkgs.cmake";
+          description = "The CMake package to use.";
+        };
+      };
+      description = "Configuration for cmake";
+      default = { };
+    };
+
+    tools = {
+      enable = lib.mkEnableOption "Standalone command line tools for C++ development" // {
+        default = cfg.package.isClang;
+        defaultText = lib.literalMD "Enabled by default for clang-based compilers";
+      };
+      package = lib.mkOption {
+        type = lib.types.package;
+        default = pkgs.clang-tools;
+        defaultText = lib.literalExpression "pkgs.clang-tools";
+        description = "The C++ command line tools package to use.";
+      };
+    };
+
+    conan = {
+      enable = lib.mkEnableOption "install conan";
+      package = lib.mkOption {
+        type = lib.types.package;
+        default = pkgs.conan;
+        defaultText = lib.literalExpression "pkgs.conan";
+        description = "The conan package to use.";
+      };
+      config = lib.mkOption {
+        type = conanSubmodule;
+        description = "conan configuration.";
+        default = { };
+      };
+      install.enable = lib.mkEnableOption "conan install during devenv initialisation";
+    };
+
     lsp = {
       enable = lib.mkEnableOption "C++ Language Server" // { default = true; };
       package = lib.mkOption {
@@ -18,11 +88,35 @@ in
     };
   };
 
-  config = lib.mkIf cfg.enable {
-    packages = with pkgs; [
-      clang-tools
-      cmake
-      clang
-    ] ++ lib.optional cfg.lsp.enable cfg.lsp.package;
-  };
+  config = lib.mkMerge [
+    (lib.mkIf cfg.enable {
+      packages = with pkgs; [
+        cfg.cmake.package
+        cfg.package
+      ]
+      ++ lib.optional cfg.tools.enable cfg.tools.package
+      ++ lib.optional cfg.lsp.enable cfg.lsp.package
+      ++ lib.optional cfg.conan.enable cfg.conan.package;
+    })
+
+    #
+    (lib.mkIf (cfg.enable && cfg.conan.enable) {
+      languages.cplusplus.conan.config.stdenv = lib.mkDefault (if config.stdenv.hasCC then config.stdenv else pkgs.stdenv);
+      languages.cplusplus.conan.config.package = lib.mkDefault cfg.conan.package;
+      languages.cplusplus.conan.config.profiles.platformToolRequires = lib.mkDefault {
+        cmake = cfg.cmake.package.version;
+      };
+      languages.cplusplus.conan.config.devShell.tools = lib.mkDefault {
+        conan = null;
+        cmake = null;
+        "${cfg.package.cc.pname}" = null;
+      };
+      languages.cplusplus.package = lib.mkDefault cfg.conan.config.stdenv.cc;
+    })
+
+    #
+    (lib.mkIf (cfg.enable && cfg.conan.enable && cfg.conan.install.enable) {
+      inputsFrom = [ cfg.conan.config.outputs.devShell ];
+    })
+  ];
 }
diff --git a/tests/cplusplus-conan-llvm-devenv/devenv.nix b/tests/cplusplus-conan-llvm-devenv/devenv.nix
new file mode 100644
index 000000000..8a7eba75b
--- /dev/null
+++ b/tests/cplusplus-conan-llvm-devenv/devenv.nix
@@ -0,0 +1,49 @@
+{ pkgs, config, lib, ... }:
+let
+  inherit (lib) getExe;
+  getCommand = package: builtins.baseNameOf (getExe package);
+  cfg = config.languages.cplusplus.conan.config;
+  c = "'c': '${getExe cfg.stdenv.cc}'";
+  cpp = "'cpp': '${builtins.dirOf (getExe cfg.stdenv.cc)}/clang++'";
+in
+{
+  stdenv = pkgs.overrideCC
+    (
+      pkgs.llvmPackages.libcxxStdenv.override {
+        targetPlatform.useLLVM = true;
+        targetPlatform.linker = "lld";
+      }
+    )
+    pkgs.llvmPackages.clangUseLLVM;
+
+  languages.cplusplus = {
+    enable = true;
+    conan = {
+      enable = true;
+      install.enable = true;
+      config = {
+        profiles = {
+          settings.build_type = "Release";
+          conf = {
+            "tools.build:compiler_executables" = "{${c}, ${cpp}}";
+          };
+        };
+        # By default: compiler.libcxx=libstdc++11, so set it:
+        compilerLibCxx = "libc++";
+      };
+    };
+  };
+
+  enterTest = ''
+    ${getCommand config.languages.cplusplus.package} --version
+    ${getCommand config.languages.cplusplus.package} --version \
+      | grep clang
+    ${getCommand config.languages.cplusplus.cmake.package} --version
+    ${getCommand config.languages.cplusplus.lsp.package} --version \
+      | grep ${pkgs.lib.escapeShellArg config.languages.cplusplus.lsp.package.version}
+    ${getCommand config.languages.cplusplus.conan.package} --version
+    echo "enable:"${pkgs.lib.escapeShellArg config.languages.cplusplus.tools.enable}":" | grep "enable:1:"
+    ${getCommand config.languages.cplusplus.conan.package} profile show \
+      | grep "cmake/"${pkgs.lib.escapeShellArg config.languages.cplusplus.cmake.package.version}
+  '';
+}
diff --git a/tests/cplusplus-conan-llvm-devenv/devenv.yaml b/tests/cplusplus-conan-llvm-devenv/devenv.yaml
new file mode 100644
index 000000000..0a9fd6c94
--- /dev/null
+++ b/tests/cplusplus-conan-llvm-devenv/devenv.yaml
@@ -0,0 +1,3 @@
+inputs:
+  conan-flake:
+    url: git+https://codeberg.org/tarcisio/conan-flake
diff --git a/tests/cplusplus-conan-llvm/devenv.nix b/tests/cplusplus-conan-llvm/devenv.nix
new file mode 100644
index 000000000..a223d4c5e
--- /dev/null
+++ b/tests/cplusplus-conan-llvm/devenv.nix
@@ -0,0 +1,47 @@
+{ pkgs, config, lib, ... }:
+let
+  inherit (lib) getExe;
+  getCommand = package: builtins.baseNameOf (getExe package);
+  cfg = config.languages.cplusplus.conan.config;
+  c = "'c': '${getExe cfg.stdenv.cc}'";
+  cpp = "'cpp': '${builtins.dirOf (getExe cfg.stdenv.cc)}/clang++'";
+in
+{
+  languages.cplusplus = {
+    enable = true;
+    conan = {
+      enable = true;
+      install.enable = true;
+      config = {
+        profiles = {
+          settings.build_type = "Release";
+          conf = {
+            "tools.build:compiler_executables" = "{${c}, ${cpp}}";
+          };
+        };
+        stdenv = pkgs.overrideCC
+          (
+            pkgs.llvmPackages.libcxxStdenv.override {
+              targetPlatform.useLLVM = true;
+              targetPlatform.linker = "lld";
+            }
+          )
+          pkgs.llvmPackages.clangUseLLVM;
+        # By default: compiler.libcxx=libstdc++11, so set it:
+        compilerLibCxx = "libc++";
+      };
+    };
+  };
+  enterTest = ''
+    ${getCommand config.languages.cplusplus.package} --version
+    ${getCommand config.languages.cplusplus.package} --version \
+      | grep clang
+    ${getCommand config.languages.cplusplus.cmake.package} --version
+    ${getCommand config.languages.cplusplus.lsp.package} --version \
+      | grep ${pkgs.lib.escapeShellArg config.languages.cplusplus.lsp.package.version}
+    ${getCommand config.languages.cplusplus.conan.package} --version
+    echo "enable:"${pkgs.lib.escapeShellArg config.languages.cplusplus.tools.enable}":" | grep "enable:1:"
+    ${getCommand config.languages.cplusplus.conan.package} profile show \
+      | grep "cmake/"${pkgs.lib.escapeShellArg config.languages.cplusplus.cmake.package.version}
+  '';
+}
diff --git a/tests/cplusplus-conan-llvm/devenv.yaml b/tests/cplusplus-conan-llvm/devenv.yaml
new file mode 100644
index 000000000..0a9fd6c94
--- /dev/null
+++ b/tests/cplusplus-conan-llvm/devenv.yaml
@@ -0,0 +1,3 @@
+inputs:
+  conan-flake:
+    url: git+https://codeberg.org/tarcisio/conan-flake
diff --git a/tests/cplusplus-conan-recipe/CMakeLists.txt b/tests/cplusplus-conan-recipe/CMakeLists.txt
new file mode 100644
index 000000000..c4669de5c
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/CMakeLists.txt
@@ -0,0 +1,15 @@
+cmake_minimum_required(VERSION 3.15)
+project(example CXX)
+
+find_package(hello-world CONFIG REQUIRED)
+
+add_executable(example src/example.cpp src/main.cpp)
+
+target_link_libraries(example hello-world::hello-world)
+
+install(
+  TARGETS example
+  DESTINATION "."
+  RUNTIME DESTINATION bin
+  ARCHIVE DESTINATION lib
+  LIBRARY DESTINATION lib)
diff --git a/tests/cplusplus-conan-recipe/conanfile.py b/tests/cplusplus-conan-recipe/conanfile.py
new file mode 100644
index 000000000..e9a57d7ee
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/conanfile.py
@@ -0,0 +1,42 @@
+from conan import ConanFile
+from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+
+
+class exampleRecipe(ConanFile):
+    name = "example"
+    version = "0.0.1"
+    package_type = "application"
+
+    # Optional metadata
+    license = "MIT"
+    author = "Tarcisio G. Rodrigues"
+    homepage = "https://codeberg.org/tarcisio/conan-flake"
+    description = "This is the Example project."
+    topics = ("testing", "example", "conan")
+
+    # Binary configuration
+    settings = "os", "compiler", "build_type", "arch"
+
+    # Sources are located in the same place as this recipe, copy them to the recipe
+    exports_sources = "CMakeLists.txt", "src/*"
+
+    def layout(self):
+        cmake_layout(self)
+
+    def requirements(self):
+        self.requires("hello-world/0.0.1.cci.20260428")
+
+    def generate(self):
+        deps = CMakeDeps(self)
+        deps.generate()
+        tc = CMakeToolchain(self)
+        tc.generate()
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def package(self):
+        cmake = CMake(self)
+        cmake.install()
diff --git a/tests/cplusplus-conan-recipe/devenv.nix b/tests/cplusplus-conan-recipe/devenv.nix
new file mode 100644
index 000000000..da05be691
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/devenv.nix
@@ -0,0 +1,31 @@
+{ pkgs, config, ... }:
+let
+  getCommand = package: builtins.baseNameOf (pkgs.lib.getExe package);
+in
+{
+  languages.cplusplus = {
+    enable = true;
+    conan = {
+      enable = true;
+      install.enable = true;
+      config = {
+        profiles.settings.build_type = "Release";
+        compilerCppStd = "17";
+        remotes.local = {
+          url = "./repo";
+          local = true;
+          allowedPackages = [
+            "hello-world/0.0.1.cci.20260428"
+          ];
+        };
+        offline = true;
+      };
+    };
+  };
+  enterTest = ''
+    ${getCommand config.languages.cplusplus.conan.package} create . --build=missing 2>&1 \
+      | grep "example/0.0.1"
+    ${getCommand config.languages.cplusplus.conan.package} remote list \
+      | grep "local-recipes-index, Enabled: True, Allowed packages: hello-world/0.0.1.cci.20260428"
+  '';
+}
diff --git a/tests/cplusplus-conan-recipe/devenv.yaml b/tests/cplusplus-conan-recipe/devenv.yaml
new file mode 100644
index 000000000..0a9fd6c94
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/devenv.yaml
@@ -0,0 +1,3 @@
+inputs:
+  conan-flake:
+    url: git+https://codeberg.org/tarcisio/conan-flake
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/CMakeLists.txt b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/CMakeLists.txt
new file mode 100644
index 000000000..a17fd8bc1
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/CMakeLists.txt
@@ -0,0 +1,9 @@
+cmake_minimum_required(VERSION 3.15)
+
+project(hello-world LANGUAGES CXX)
+
+add_library(hello-world src/hello-world.cpp)
+
+target_include_directories(hello-world PUBLIC include)
+set_target_properties(hello-world PROPERTIES PUBLIC_HEADER "include/hello-world.h")
+install(TARGETS hello-world)
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/conanfile.py b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/conanfile.py
new file mode 100644
index 000000000..cef4f1220
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/conanfile.py
@@ -0,0 +1,53 @@
+from pathlib import Path
+
+from conan import ConanFile
+from conan.tools.cmake import CMake, CMakeDeps, CMakeToolchain, cmake_layout
+from conan.tools.files import save
+
+required_conan_version = ">=2.12"
+
+
+class hello_worldRecipe(ConanFile):
+    name = "hello-world"
+    package_type = "library"
+
+    # Optional metadata
+    license = "MIT"
+    url = "https://github.com/conan-io/conan-center-index"
+    description = "Dummy recipe for internal testing"
+    topics = ("conan-testing", "dummy")
+
+    # Binary configuration
+    settings = "os", "compiler", "build_type", "arch"
+    options = {"shared": [True, False], "fPIC": [True, False]}
+    default_options = {"shared": False, "fPIC": True}
+
+    # Sources are located in the same place as this recipe, copy them to the recipe
+    exports_sources = "CMakeLists.txt", "src/*", "include/*"
+
+    implements = ["auto_shared_fpic"]
+
+    def layout(self):
+        cmake_layout(self)
+
+    def generate(self):
+        deps = CMakeDeps(self)
+        deps.generate()
+        tc = CMakeToolchain(self)
+        tc.generate()
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def package(self):
+        cmake = CMake(self)
+        cmake.install()
+
+        # save a dummy .la file to trigger hook warning
+        la_file = Path(self.package_folder) / "lib" / "hello-world-foobar.la"
+        save(self, la_file.as_posix(), "foobar")
+
+    def package_info(self):
+        self.cpp_info.libs = ["hello-world"]
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/include/hello-world.h b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/include/hello-world.h
new file mode 100644
index 000000000..23d083c87
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/include/hello-world.h
@@ -0,0 +1,14 @@
+#pragma once
+
+#include <vector>
+#include <string>
+
+
+#ifdef _WIN32
+  #define HELLO_WORLD_EXPORT __declspec(dllexport)
+#else
+  #define HELLO_WORLD_EXPORT
+#endif
+
+HELLO_WORLD_EXPORT void hello_world();
+HELLO_WORLD_EXPORT void hello_world_print_vector(const std::vector<std::string> &strings);
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/src/hello-world.cpp b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/src/hello-world.cpp
new file mode 100644
index 000000000..50f9f4ac1
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/src/hello-world.cpp
@@ -0,0 +1,120 @@
+#include <iostream>
+#include "hello-world.h"
+
+
+
+void hello_world(){
+
+
+    #ifdef NDEBUG
+    std::cout << "hello-world: Hello World Release!\n";
+    #else
+    std::cout << "hello-world: Hello World Debug!\n";
+    #endif
+
+    // ARCHITECTURES
+    #ifdef _M_X64
+    std::cout << "  hello-world: _M_X64 defined\n";
+    #endif
+
+    #ifdef _M_IX86
+    std::cout << "  hello-world: _M_IX86 defined\n";
+    #endif
+
+    #ifdef _M_ARM64
+    std::cout << "  hello-world: _M_ARM64 defined\n";
+    #endif
+
+    #if __i386__
+    std::cout << "  hello-world: __i386__ defined\n";
+    #endif
+
+    #if __x86_64__
+    std::cout << "  hello-world: __x86_64__ defined\n";
+    #endif
+
+    #if __aarch64__
+    std::cout << "  hello-world: __aarch64__ defined\n";
+    #endif
+
+    // Libstdc++
+    #if defined _GLIBCXX_USE_CXX11_ABI
+    std::cout << "  hello-world: _GLIBCXX_USE_CXX11_ABI "<< _GLIBCXX_USE_CXX11_ABI << "\n";
+    #endif
+
+    // MSVC runtime
+    #if defined(_DEBUG)
+        #if defined(_MT) && defined(_DLL)
+        std::cout << "  hello-world: MSVC runtime: MultiThreadedDebugDLL\n";
+        #elif defined(_MT)
+        std::cout << "  hello-world: MSVC runtime: MultiThreadedDebug\n";
+        #endif
+    #else
+        #if defined(_MT) && defined(_DLL)
+        std::cout << "  hello-world: MSVC runtime: MultiThreadedDLL\n";
+        #elif defined(_MT)
+        std::cout << "  hello-world: MSVC runtime: MultiThreaded\n";
+        #endif
+    #endif
+
+    // COMPILER VERSIONS
+    #if _MSC_VER
+    std::cout << "  hello-world: _MSC_VER" << _MSC_VER<< "\n";
+    #endif
+
+    #if _MSVC_LANG
+    std::cout << "  hello-world: _MSVC_LANG" << _MSVC_LANG<< "\n";
+    #endif
+
+    #if __cplusplus
+    std::cout << "  hello-world: __cplusplus" << __cplusplus<< "\n";
+    #endif
+
+    #if __INTEL_COMPILER
+    std::cout << "  hello-world: __INTEL_COMPILER" << __INTEL_COMPILER<< "\n";
+    #endif
+
+    #if __GNUC__
+    std::cout << "  hello-world: __GNUC__" << __GNUC__<< "\n";
+    #endif
+
+    #if __GNUC_MINOR__
+    std::cout << "  hello-world: __GNUC_MINOR__" << __GNUC_MINOR__<< "\n";
+    #endif
+
+    #if __clang_major__
+    std::cout << "  hello-world: __clang_major__" << __clang_major__<< "\n";
+    #endif
+
+    #if __clang_minor__
+    std::cout << "  hello-world: __clang_minor__" << __clang_minor__<< "\n";
+    #endif
+
+    #if __apple_build_version__
+    std::cout << "  hello-world: __apple_build_version__" << __apple_build_version__<< "\n";
+    #endif
+
+    // SUBSYSTEMS
+
+    #if __MSYS__
+    std::cout << "  hello-world: __MSYS__" << __MSYS__<< "\n";
+    #endif
+
+    #if __MINGW32__
+    std::cout << "  hello-world: __MINGW32__" << __MINGW32__<< "\n";
+    #endif
+
+    #if __MINGW64__
+    std::cout << "  hello-world: __MINGW64__" << __MINGW64__<< "\n";
+    #endif
+
+    #if __CYGWIN__
+    std::cout << "  hello-world: __CYGWIN__" << __CYGWIN__<< "\n";
+    #endif
+}
+
+void hello_world_print_vector(const std::vector<std::string> &strings) {
+    for(std::vector<std::string>::const_iterator it = strings.begin(); it != strings.end(); ++it) {
+        std::cout << "hello_world " << *it << std::endl;
+    }
+}
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/CMakeLists.txt b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/CMakeLists.txt
new file mode 100644
index 000000000..ad9491538
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.15)
+project(PackageTest CXX)
+
+find_package(hello-world CONFIG REQUIRED)
+
+add_executable(example src/example.cpp)
+target_link_libraries(example hello-world::hello-world)
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/conanfile.py b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/conanfile.py
new file mode 100644
index 000000000..4a96772e5
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/conanfile.py
@@ -0,0 +1,26 @@
+import os
+
+from conan import ConanFile
+from conan.tools.build import can_run
+from conan.tools.cmake import CMake, cmake_layout
+
+
+class hello_worldTestConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "CMakeDeps", "CMakeToolchain"
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def layout(self):
+        cmake_layout(self)
+
+    def test(self):
+        if can_run(self):
+            cmd = os.path.join(self.cpp.build.bindir, "example")
+            self.run(cmd, env="conanrun")
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/src/example.cpp b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/src/example.cpp
new file mode 100644
index 000000000..7eaed2893
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/all/test_package/src/example.cpp
@@ -0,0 +1,12 @@
+#include "hello-world.h"
+#include <vector>
+#include <string>
+
+int main() {
+    hello_world();
+
+    std::vector<std::string> vec;
+    vec.push_back("test_package");
+
+    hello_world_print_vector(vec);
+}
diff --git a/tests/cplusplus-conan-recipe/repo/recipes/hello-world/config.yml b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/config.yml
new file mode 100644
index 000000000..11d0bf94a
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/repo/recipes/hello-world/config.yml
@@ -0,0 +1,3 @@
+versions:
+  "0.0.1.cci.20260428":
+    folder: all
diff --git a/tests/cplusplus-conan-recipe/src/example.cpp b/tests/cplusplus-conan-recipe/src/example.cpp
new file mode 100644
index 000000000..8e6ad2418
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/src/example.cpp
@@ -0,0 +1,10 @@
+#include <iostream>
+
+#include "example.h"
+
+void example_print_vector(const std::vector<std::string> &strings) {
+  for (std::vector<std::string>::const_iterator it = strings.begin();
+       it != strings.end(); ++it) {
+    std::cout << "example/0.0.1 " << *it << std::endl;
+  }
+}
diff --git a/tests/cplusplus-conan-recipe/src/example.h b/tests/cplusplus-conan-recipe/src/example.h
new file mode 100644
index 000000000..f08bd5d75
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/src/example.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#ifdef _WIN32
+#define EXAMPLE_EXPORT __declspec(dllexport)
+#else
+#define EXAMPLE_EXPORT
+#endif
+
+EXAMPLE_EXPORT void example_print_vector(const std::vector<std::string> &strings);
diff --git a/tests/cplusplus-conan-recipe/src/main.cpp b/tests/cplusplus-conan-recipe/src/main.cpp
new file mode 100644
index 000000000..2ea64b33a
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/src/main.cpp
@@ -0,0 +1,15 @@
+#include <string>
+#include <vector>
+
+#include "example.h"
+#include "hello-world.h"
+
+
+int main() {
+  hello_world();
+
+  std::vector<std::string> vec;
+  vec.push_back("test_package");
+
+  example_print_vector(vec);
+}
diff --git a/tests/cplusplus-conan-recipe/test_package/.gitignore b/tests/cplusplus-conan-recipe/test_package/.gitignore
new file mode 100644
index 000000000..cdb5a221d
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/test_package/.gitignore
@@ -0,0 +1,3 @@
+*
+!.gitignore
+!conanfile.py
diff --git a/tests/cplusplus-conan-recipe/test_package/conanfile.py b/tests/cplusplus-conan-recipe/test_package/conanfile.py
new file mode 100644
index 000000000..4b64c0da0
--- /dev/null
+++ b/tests/cplusplus-conan-recipe/test_package/conanfile.py
@@ -0,0 +1,15 @@
+import os
+
+from conan import ConanFile
+from conan.tools.build import can_run
+
+
+class exampleTestConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def test(self):
+        if can_run(self):
+            self.run("example", env="conanrun")
diff --git a/tests/cplusplus-conan-stdenvNoCC/devenv.nix b/tests/cplusplus-conan-stdenvNoCC/devenv.nix
new file mode 100644
index 000000000..b21844c90
--- /dev/null
+++ b/tests/cplusplus-conan-stdenvNoCC/devenv.nix
@@ -0,0 +1,23 @@
+{ pkgs, config, ... }:
+let
+  getCommand = package: builtins.baseNameOf (pkgs.lib.getExe package);
+in
+{
+  stdenv = pkgs.stdenvNoCC;
+  languages.cplusplus.enable = true;
+  languages.cplusplus.conan.enable = true;
+  languages.cplusplus.conan.install.enable = true;
+  enterTest = ''
+    ${getCommand config.languages.cplusplus.package} --version
+    ${getCommand config.languages.cplusplus.package} --version \
+      | grep ${pkgs.lib.escapeShellArg pkgs.stdenv.cc.cc.pname}
+    ${getCommand config.languages.cplusplus.cmake.package} --version
+    ${getCommand config.languages.cplusplus.lsp.package} --version \
+      | grep ${pkgs.lib.escapeShellArg config.languages.cplusplus.lsp.package.version}
+    ${getCommand config.languages.cplusplus.conan.package} --version
+    echo "enable:"${pkgs.lib.escapeShellArg config.languages.cplusplus.tools.enable}":" \
+      | grep "enable:"${pkgs.lib.escapeShellArg pkgs.stdenv.cc.isClang}":"
+    ${getCommand config.languages.cplusplus.conan.package} profile show \
+      | grep "cmake/"${pkgs.lib.escapeShellArg config.languages.cplusplus.cmake.package.version}
+  '';
+}
diff --git a/tests/cplusplus-conan-stdenvNoCC/devenv.yaml b/tests/cplusplus-conan-stdenvNoCC/devenv.yaml
new file mode 100644
index 000000000..0a9fd6c94
--- /dev/null
+++ b/tests/cplusplus-conan-stdenvNoCC/devenv.yaml
@@ -0,0 +1,3 @@
+inputs:
+  conan-flake:
+    url: git+https://codeberg.org/tarcisio/conan-flake
diff --git a/tests/cplusplus-conan/devenv.nix b/tests/cplusplus-conan/devenv.nix
new file mode 100644
index 000000000..5eb524505
--- /dev/null
+++ b/tests/cplusplus-conan/devenv.nix
@@ -0,0 +1,22 @@
+{ pkgs, config, ... }:
+let
+  getCommand = package: builtins.baseNameOf (pkgs.lib.getExe package);
+in
+{
+  languages.cplusplus.enable = true;
+  languages.cplusplus.conan.enable = true;
+  languages.cplusplus.conan.install.enable = true;
+  enterTest = ''
+    ${getCommand config.languages.cplusplus.package} --version
+    ${getCommand config.languages.cplusplus.package} --version \
+      | grep ${pkgs.lib.escapeShellArg config.stdenv.cc.cc.pname}
+    ${getCommand config.languages.cplusplus.cmake.package} --version
+    ${getCommand config.languages.cplusplus.lsp.package} --version \
+      | grep ${pkgs.lib.escapeShellArg config.languages.cplusplus.lsp.package.version}
+    ${getCommand config.languages.cplusplus.conan.package} --version
+    echo "enable:"${pkgs.lib.escapeShellArg config.languages.cplusplus.tools.enable}":" \
+      | grep "enable:"${pkgs.lib.escapeShellArg config.stdenv.cc.isClang}":"
+    ${getCommand config.languages.cplusplus.conan.package} profile show \
+      | grep "cmake/"${pkgs.lib.escapeShellArg config.languages.cplusplus.cmake.package.version}
+  '';
+}
diff --git a/tests/cplusplus-conan/devenv.yaml b/tests/cplusplus-conan/devenv.yaml
new file mode 100644
index 000000000..0a9fd6c94
--- /dev/null
+++ b/tests/cplusplus-conan/devenv.yaml
@@ -0,0 +1,3 @@
+inputs:
+  conan-flake:
+    url: git+https://codeberg.org/tarcisio/conan-flake
diff --git a/tests/cplusplus/devenv.nix b/tests/cplusplus/devenv.nix
new file mode 100644
index 000000000..d52339055
--- /dev/null
+++ b/tests/cplusplus/devenv.nix
@@ -0,0 +1,18 @@
+{ pkgs, config, ... }:
+let
+  getCommand = package: builtins.baseNameOf (pkgs.lib.getExe package);
+in
+{
+  languages.cplusplus.enable = true;
+  enterTest = ''
+    clang --version
+    ${getCommand config.languages.cplusplus.package} --version \
+      | grep clang
+    cmake --version
+    ccls --version | grep ${pkgs.lib.escapeShellArg config.languages.cplusplus.lsp.package.version}
+    # Validate some clang-tools are in the path:
+    clang-doc --version
+    clang-format --version
+    clang-tidy --version
+  '';
+}