prompt: You will be provided with a partial code base and an issue statement explaining a problem to resolve.
  <issue>
  shell test kcov suggestion does not work
  ### Steps to reproduce the issue
  
  ```console
  $ ./share/spack/qa/run-shell-tests 
  ERROR: kcov is required to run this script.
  
  To install with Spack, run:
      $ spack install kcov
  Then add the bin directory to your PATH.
  $ spack load kcov
  $ ./share/spack/qa/run-shell-tests 
  ERROR: kcov is required to run this script.
  
  To install with Spack, run:
      $ spack install kcov
  Then add the bin directory to your PATH.
  ```
  
  Seems like there is no kcov binary:
  
  ```
  $ kcov
  
  Command 'kcov' not found, but can be installed with:
  
  sudo apt install kcov
  ```
  
  * **Spack:** 0.16.0-1501-e8eb76c198
  * **Python:** 3.8.7
  * **Platform:** linux-ubuntu20.04-zen2
  * **Concretizer:** clingo
  
  ### Additional information
  
  - [x] I have run `spack debug report` and reported the version of Spack/Python/Platform
  - [x] I have searched the issues of this repo and believe this is not a duplicate
  - [x] I have run the failing commands in debug mode and reported the output
  
  
  
  
  </issue>
  <code>
  [start of var/spack/repos/builtin/packages/kcov/package.py]
  1 # Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
  2 # Spack Project Developers. See the top-level COPYRIGHT file for details.
  3 #
  4 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
  5 
  6 from spack import *
  7 
  8 
  9 class Kcov(CMakePackage):
  10     """Code coverage tool for compiled programs, Python and Bash which uses
  11     debugging information to collect and report data without special
  12     compilation options"""
  13 
  14     homepage = "http://simonkagstrom.github.io/kcov/index.html"
  15     url      = "https://github.com/SimonKagstrom/kcov/archive/38.tar.gz"
  16 
  17     version('38', sha256='b37af60d81a9b1e3b140f9473bdcb7975af12040feb24cc666f9bb2bb0be68b4')
  18 
  19     depends_on('cmake@2.8.4:', type='build')
  20     depends_on('zlib')
  21     depends_on('curl')
  22 
  23     def cmake_args(self):
  24         # Necessary at least on macOS, fixes linking error to LLDB
  25         # https://github.com/Homebrew/homebrew-core/blob/master/Formula/kcov.rb
  26         return ['-DSPECIFY_RPATH=ON']
  27 
  28     @run_after('install')
  29     @on_package_attributes(run_tests=True)
  30     def test_install(self):
  31         # The help message exits with an exit code of 1
  32         kcov = Executable(self.prefix.bin.kcov)
  33         kcov('-h', ignore_errors=1)
  34
  [end of var/spack/repos/builtin/packages/kcov/package.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/var/spack/repos/builtin/packages/kcov/package.py b/var/spack/repos/builtin/packages/kcov/package.py
  --- a/var/spack/repos/builtin/packages/kcov/package.py
  +++ b/var/spack/repos/builtin/packages/kcov/package.py
  @@ -19,6 +19,8 @@
       depends_on('cmake@2.8.4:', type='build')
       depends_on('zlib')
       depends_on('curl')
  +    depends_on('elfutils')
  +    depends_on('binutils +libiberty', type='link')
   
       def cmake_args(self):
           # Necessary at least on macOS, fixes linking error to LLDB
  
verification_info: {"golden_diff": "diff --git a/var/spack/repos/builtin/packages/kcov/package.py b/var/spack/repos/builtin/packages/kcov/package.py\n--- a/var/spack/repos/builtin/packages/kcov/package.py\n+++ b/var/spack/repos/builtin/packages/kcov/package.py\n@@ -19,6 +19,8 @@\n     depends_on('cmake@2.8.4:', type='build')\n     depends_on('zlib')\n     depends_on('curl')\n+    depends_on('elfutils')\n+    depends_on('binutils +libiberty', type='link')\n \n     def cmake_args(self):\n         # Necessary at least on macOS, fixes linking error to LLDB\n", "issue": "shell test kcov suggestion does not work\n### Steps to reproduce the issue\r\n\r\n```console\r\n$ ./share/spack/qa/run-shell-tests \r\nERROR: kcov is required to run this script.\r\n\r\nTo install with Spack, run:\r\n    $ spack install kcov\r\nThen add the bin directory to your PATH.\r\n$ spack load kcov\r\n$ ./share/spack/qa/run-shell-tests \r\nERROR: kcov is required to run this script.\r\n\r\nTo install with Spack, run:\r\n    $ spack install kcov\r\nThen add the bin directory to your PATH.\r\n```\r\n\r\nSeems like there is no kcov binary:\r\n\r\n```\r\n$ kcov\r\n\r\nCommand 'kcov' not found, but can be installed with:\r\n\r\nsudo apt install kcov\r\n```\r\n\r\n* **Spack:** 0.16.0-1501-e8eb76c198\r\n* **Python:** 3.8.7\r\n* **Platform:** linux-ubuntu20.04-zen2\r\n* **Concretizer:** clingo\r\n\r\n### Additional information\r\n\r\n- [x] I have run `spack debug report` and reported the version of Spack/Python/Platform\r\n- [x] I have searched the issues of this repo and believe this is not a duplicate\r\n- [x] I have run the failing commands in debug mode and reported the output\r\n\r\n\r\n\n", "before_files": [{"content": "# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other\n# Spack Project Developers. See the top-level COPYRIGHT file for details.\n#\n# SPDX-License-Identifier: (Apache-2.0 OR MIT)\n\nfrom spack import *\n\n\nclass Kcov(CMakePackage):\n    \"\"\"Code coverage tool for compiled programs, Python and Bash which uses\n    debugging information to collect and report data without special\n    compilation options\"\"\"\n\n    homepage = \"http://simonkagstrom.github.io/kcov/index.html\"\n    url      = \"https://github.com/SimonKagstrom/kcov/archive/38.tar.gz\"\n\n    version('38', sha256='b37af60d81a9b1e3b140f9473bdcb7975af12040feb24cc666f9bb2bb0be68b4')\n\n    depends_on('cmake@2.8.4:', type='build')\n    depends_on('zlib')\n    depends_on('curl')\n\n    def cmake_args(self):\n        # Necessary at least on macOS, fixes linking error to LLDB\n        # https://github.com/Homebrew/homebrew-core/blob/master/Formula/kcov.rb\n        return ['-DSPECIFY_RPATH=ON']\n\n    @run_after('install')\n    @on_package_attributes(run_tests=True)\n    def test_install(self):\n        # The help message exits with an exit code of 1\n        kcov = Executable(self.prefix.bin.kcov)\n        kcov('-h', ignore_errors=1)\n", "path": "var/spack/repos/builtin/packages/kcov/package.py"}]}