prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  [bug] Some system packages fail to install (xorg/system, opengl/system)
  <!--
    Please don't forget to update the issue title.
    Include all applicable information to help us reproduce your problem.
  
    To help us debug your issue please explain:
  --> When configuring a cmake project template that used conan i encountered an error while configuring cmake : 
  `opengl/system: ERROR: while executing system_requirements(): 'SysConfigOpenGLConan' object has no attribute 'warn'`. After attemping a manual installation with `conan install opengl/system@` i still have the same problem and output. I have no idea what could be causing this and after a few hours of googling i failed to find anything that would explain this. I also get the exact same output when installing `xorg/system`
  
  ### Environment Details (include every applicable attribute)
    * Operating System+version: Pop!_OS 20.04 LTS x86_64
    * Compiler+version: gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0
    * Conan version: Conan version 1.26.0
    * Python version: Python 2.7.18rc1 AND Python 3.8.2
  
  ### Steps to reproduce (Include if Applicable)
  `conan install opengl/system@`
  `conan install xorg/system@`
  
  ### Logs (Executed commands with output) (Include/Attach if Applicable)
  
  ```
  Configuration:
  [settings]
  arch=x86_64
  arch_build=x86_64
  build_type=Release
  os=Linux
  os_build=Linux
  [options]
  [build_requires]
  [env]
  
  Installing package: opengl/system
  Requirements
      opengl/system from 'conan-center' - Cache
  Packages
      opengl/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache
  
  Installing (downloading, building) binaries...
  opengl/system: ERROR: while executing system_requirements(): 'SysConfigOpenGLConan' object has no attribute 'warn'
  ERROR: Error in system requirements
  ```
  
  
  </issue>
  <code>
  [start of recipes/opengl/all/conanfile.py]
  1 from conans import ConanFile, tools
  2 from conans.errors import ConanException
  3 import os
  4 
  5 
  6 class SysConfigOpenGLConan(ConanFile):
  7     name = "opengl"
  8     version = "system"
  9     description = "cross-platform virtual conan package for the OpenGL support"
  10     topics = ("conan", "opengl", "gl")
  11     url = "https://github.com/conan-io/conan-center-index"
  12     homepage = "https://www.opengl.org/"
  13     license = "MIT"
  14     settings = ("os",)
  15 
  16     def package_id(self):
  17         self.info.header_only()
  18 
  19     def _fill_cppinfo_from_pkgconfig(self, name):
  20         pkg_config = tools.PkgConfig(name)
  21         if not pkg_config.provides:
  22             raise ConanException("OpenGL development files aren't available, give up")
  23         libs = [lib[2:] for lib in pkg_config.libs_only_l]
  24         lib_dirs = [lib[2:] for lib in pkg_config.libs_only_L]
  25         ldflags = [flag for flag in pkg_config.libs_only_other]
  26         include_dirs = [include[2:] for include in pkg_config.cflags_only_I]
  27         cflags = [flag for flag in pkg_config.cflags_only_other if not flag.startswith("-D")]
  28         defines = [flag[2:] for flag in pkg_config.cflags_only_other if flag.startswith("-D")]
  29 
  30         self.cpp_info.system_libs.extend(libs)
  31         self.cpp_info.libdirs.extend(lib_dirs)
  32         self.cpp_info.sharedlinkflags.extend(ldflags)
  33         self.cpp_info.exelinkflags.extend(ldflags)
  34         self.cpp_info.defines.extend(defines)
  35         self.cpp_info.includedirs.extend(include_dirs)
  36         self.cpp_info.cflags.extend(cflags)
  37         self.cpp_info.cxxflags.extend(cflags)
  38 
  39     def system_requirements(self):
  40         if tools.os_info.is_linux and self.settings.os == "Linux":
  41             package_tool = tools.SystemPackageTool(conanfile=self, default_mode='verify')
  42             if tools.os_info.with_yum:
  43                 if tools.os_info.linux_distro == "fedora" and tools.os_info.os_version >= "32":
  44                     packages = ["libglvnd-devel"]
  45                 else:
  46                     packages = ["mesa-libGL-devel"]
  47             elif tools.os_info.with_apt:
  48                 ubuntu_20_or_later = tools.os_info.linux_distro == "ubuntu" and tools.os_info.os_version >= "20"
  49                 debian_11_or_later = tools.os_info.linux_distro == "debian" and tools.os_info.os_version >= "11"
  50                 if ubuntu_20_or_later or debian_11_or_later:
  51                     packages = ["libgl-dev"]
  52                 else:
  53                     packages = ["libgl1-mesa-dev"]
  54             elif tools.os_info.with_pacman:
  55                 packages = ["libglvnd"]
  56             elif tools.os_info.with_zypper:
  57                 packages = ["Mesa-libGL-devel"]
  58             else:
  59                 self.warn("don't know how to install OpenGL for your distro")
  60             package_tool.install(update=True, packages=packages)
  61 
  62     def package_info(self):
  63         if self.settings.os == "Macos":
  64             self.cpp_info.defines.append("GL_SILENCE_DEPRECATION=1")
  65             self.cpp_info.frameworks.append("OpenGL")
  66         elif self.settings.os == "Windows":
  67             self.cpp_info.system_libs = ["OpenGL32"]
  68         elif self.settings.os == "Linux":
  69             self._fill_cppinfo_from_pkgconfig('gl')
  70
  [end of recipes/opengl/all/conanfile.py]
  </code>
  
  I need you to solve this issue by generating a single patch file that I can apply directly to this repository using git apply. Please respond with a single patch file in the following format.
  <patch>
  diff --git a/file.py b/file.py
  --- a/file.py
  +++ b/file.py
  @@ -1,27 +1,35 @@
   def euclidean(a, b):
  -    while b:
  -        a, b = b, a % b
  -    return a
  +    if b == 0:
  +        return a
  +    return euclidean(b, a % b)
   
   
   def bresenham(x0, y0, x1, y1):
       points = []
       dx = abs(x1 - x0)
       dy = abs(y1 - y0)
  -    sx = 1 if x0 < x1 else -1
  -    sy = 1 if y0 < y1 else -1
  -    err = dx - dy
  +    x, y = x0, y0
  +    sx = -1 if x0 > x1 else 1
  +    sy = -1 if y0 > y1 else 1
   
  -    while True:
  -        points.append((x0, y0))
  -        if x0 == x1 and y0 == y1:
  -            break
  -        e2 = 2 * err
  -        if e2 > -dy:
  -            err -= dy
  -            x0 += sx
  -        if e2 < dx:
  -            err += dx
  -            y0 += sy
  +    if dx > dy:
  +        err = dx / 2.0
  +        while x != x1:
  +            points.append((x, y))
  +            err -= dy
  +            if err < 0:
  +                y += sy
  +                err += dx
  +            x += sx
  +    else:
  +        err = dy / 2.0
  +        while y != y1:
  +            points.append((x, y))
  +            err -= dx
  +            if err < 0:
  +                x += sx
  +                err += dy
  +            y += sy
  +
  +    points.append((x, y))
       return points
  
  </patch>
golden_diff: diff --git a/recipes/opengl/all/conanfile.py b/recipes/opengl/all/conanfile.py
  --- a/recipes/opengl/all/conanfile.py
  +++ b/recipes/opengl/all/conanfile.py
  @@ -56,7 +56,7 @@
               elif tools.os_info.with_zypper:
                   packages = ["Mesa-libGL-devel"]
               else:
  -                self.warn("don't know how to install OpenGL for your distro")
  +                self.output.warn("Don't know how to install OpenGL for your distro.")
               package_tool.install(update=True, packages=packages)
   
       def package_info(self):
  
verification_info: {"golden_diff": "diff --git a/recipes/opengl/all/conanfile.py b/recipes/opengl/all/conanfile.py\n--- a/recipes/opengl/all/conanfile.py\n+++ b/recipes/opengl/all/conanfile.py\n@@ -56,7 +56,7 @@\n             elif tools.os_info.with_zypper:\n                 packages = [\"Mesa-libGL-devel\"]\n             else:\n-                self.warn(\"don't know how to install OpenGL for your distro\")\n+                self.output.warn(\"Don't know how to install OpenGL for your distro.\")\n             package_tool.install(update=True, packages=packages)\n \n     def package_info(self):\n", "issue": "[bug] Some system packages fail to install (xorg/system, opengl/system)\n<!--\r\n  Please don't forget to update the issue title.\r\n  Include all applicable information to help us reproduce your problem.\r\n\r\n  To help us debug your issue please explain:\r\n--> When configuring a cmake project template that used conan i encountered an error while configuring cmake : \r\n`opengl/system: ERROR: while executing system_requirements(): 'SysConfigOpenGLConan' object has no attribute 'warn'`. After attemping a manual installation with `conan install opengl/system@` i still have the same problem and output. I have no idea what could be causing this and after a few hours of googling i failed to find anything that would explain this. I also get the exact same output when installing `xorg/system`\r\n\r\n### Environment Details (include every applicable attribute)\r\n  * Operating System+version: Pop!_OS 20.04 LTS x86_64\r\n  * Compiler+version: gcc (Ubuntu 9.3.0-10ubuntu2) 9.3.0\r\n  * Conan version: Conan version 1.26.0\r\n  * Python version: Python 2.7.18rc1 AND Python 3.8.2\r\n\r\n### Steps to reproduce (Include if Applicable)\r\n`conan install opengl/system@`\r\n`conan install xorg/system@`\r\n\r\n### Logs (Executed commands with output) (Include/Attach if Applicable)\r\n\r\n```\r\nConfiguration:\r\n[settings]\r\narch=x86_64\r\narch_build=x86_64\r\nbuild_type=Release\r\nos=Linux\r\nos_build=Linux\r\n[options]\r\n[build_requires]\r\n[env]\r\n\r\nInstalling package: opengl/system\r\nRequirements\r\n    opengl/system from 'conan-center' - Cache\r\nPackages\r\n    opengl/system:5ab84d6acfe1f23c4fae0ab88f26e3a396351ac9 - Cache\r\n\r\nInstalling (downloading, building) binaries...\r\nopengl/system: ERROR: while executing system_requirements(): 'SysConfigOpenGLConan' object has no attribute 'warn'\r\nERROR: Error in system requirements\r\n```\r\n\n", "before_files": [{"content": "from conans import ConanFile, tools\nfrom conans.errors import ConanException\nimport os\n\n\nclass SysConfigOpenGLConan(ConanFile):\n    name = \"opengl\"\n    version = \"system\"\n    description = \"cross-platform virtual conan package for the OpenGL support\"\n    topics = (\"conan\", \"opengl\", \"gl\")\n    url = \"https://github.com/conan-io/conan-center-index\"\n    homepage = \"https://www.opengl.org/\"\n    license = \"MIT\"\n    settings = (\"os\",)\n\n    def package_id(self):\n        self.info.header_only()\n\n    def _fill_cppinfo_from_pkgconfig(self, name):\n        pkg_config = tools.PkgConfig(name)\n        if not pkg_config.provides:\n            raise ConanException(\"OpenGL development files aren't available, give up\")\n        libs = [lib[2:] for lib in pkg_config.libs_only_l]\n        lib_dirs = [lib[2:] for lib in pkg_config.libs_only_L]\n        ldflags = [flag for flag in pkg_config.libs_only_other]\n        include_dirs = [include[2:] for include in pkg_config.cflags_only_I]\n        cflags = [flag for flag in pkg_config.cflags_only_other if not flag.startswith(\"-D\")]\n        defines = [flag[2:] for flag in pkg_config.cflags_only_other if flag.startswith(\"-D\")]\n\n        self.cpp_info.system_libs.extend(libs)\n        self.cpp_info.libdirs.extend(lib_dirs)\n        self.cpp_info.sharedlinkflags.extend(ldflags)\n        self.cpp_info.exelinkflags.extend(ldflags)\n        self.cpp_info.defines.extend(defines)\n        self.cpp_info.includedirs.extend(include_dirs)\n        self.cpp_info.cflags.extend(cflags)\n        self.cpp_info.cxxflags.extend(cflags)\n\n    def system_requirements(self):\n        if tools.os_info.is_linux and self.settings.os == \"Linux\":\n            package_tool = tools.SystemPackageTool(conanfile=self, default_mode='verify')\n            if tools.os_info.with_yum:\n                if tools.os_info.linux_distro == \"fedora\" and tools.os_info.os_version >= \"32\":\n                    packages = [\"libglvnd-devel\"]\n                else:\n                    packages = [\"mesa-libGL-devel\"]\n            elif tools.os_info.with_apt:\n                ubuntu_20_or_later = tools.os_info.linux_distro == \"ubuntu\" and tools.os_info.os_version >= \"20\"\n                debian_11_or_later = tools.os_info.linux_distro == \"debian\" and tools.os_info.os_version >= \"11\"\n                if ubuntu_20_or_later or debian_11_or_later:\n                    packages = [\"libgl-dev\"]\n                else:\n                    packages = [\"libgl1-mesa-dev\"]\n            elif tools.os_info.with_pacman:\n                packages = [\"libglvnd\"]\n            elif tools.os_info.with_zypper:\n                packages = [\"Mesa-libGL-devel\"]\n            else:\n                self.warn(\"don't know how to install OpenGL for your distro\")\n            package_tool.install(update=True, packages=packages)\n\n    def package_info(self):\n        if self.settings.os == \"Macos\":\n            self.cpp_info.defines.append(\"GL_SILENCE_DEPRECATION=1\")\n            self.cpp_info.frameworks.append(\"OpenGL\")\n        elif self.settings.os == \"Windows\":\n            self.cpp_info.system_libs = [\"OpenGL32\"]\n        elif self.settings.os == \"Linux\":\n            self._fill_cppinfo_from_pkgconfig('gl')\n", "path": "recipes/opengl/all/conanfile.py"}]}