[bug] ImportError: cannot import name 'CMake' from 'conan' (/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/qiskit_env2/lib/python3.13/site-packages/conan/__init__.py)

[anurag-quantum]

Describe the bug

MacOS, virtual environment

Installing collected packages: conan
Successfully installed conan-2.9.2
Installing collected packages: conan
Successfully installed conan-2.9.2

[notice] A new release of pip is available: 24.2 -> 24.3.1
[notice] To update, run: pip install --upgrade pip
(qiskit_env2) anuragpateriya@anurags-MBP qe-compiler % nano conanfile.py 
(qiskit_env2) anuragpateriya@anurags-MBP qe-compiler % conan install . -s build_type=Release -o 'zlib/*:shared=True' -o 'openssl/*:shared=True'

======== Input profiles ========
Profile host:
[settings]
arch=armv8
build_type=Release
compiler=apple-clang
compiler.cppstd=gnu17
compiler.libcxx=libc++
compiler.version=15
os=Macos
[options]
openssl/*:shared=True
zlib/*:shared=True

Profile build:
[settings]
arch=armv8
build_type=Release
compiler=apple-clang
compiler.cppstd=gnu17
compiler.libcxx=libc++
compiler.version=15
os=Macos

ERROR: Error loading conanfile at '/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py': Unable to load conanfile in /Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "<frozen importlib._bootstrap_external>", line 1022, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py", line 14, in <module>
    from conan import ConanFile, CMake, tools
ImportError: cannot import name 'CMake' from 'conan' (/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/qiskit_env2/lib/python3.13/site-packages/conan/__init__.py)

How to reproduce it

No response

[memsharded]

Hi @anurag-quantum

Thanks for your feedback.

This wouldn't be a bug. You are using with Conan 2.X a legacy Conan 1.X recipe, that contains from conan import ConanFile, CMake, tools, which no longer exist in Conan 2. It seems you replaced the from conans with from conan, but that is not enough, you need to use the new imports and tools, it is not just that the import changes, but the legacy tools were replaced already in Conan 1.X many years ago with modern alternatives, that can be imported from the namespaces like from conan.tools.cmake import CMakeDeps, CMakeToolchain, CMake, cmake_layout.

Please have a look to https://docs.conan.io/1/conan_v2.html, the very first section talks about the imports.

[anurag-quantum]

@memsharded Thanks. Thats resolved my issue.

[memsharded]

Great, closing the ticket as solved then, thanks for the feedback

[anurag-quantum]

After making the change, I am facing this .

ERROR: Conanfile not found at /Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/conanfile.txt

while running this command.

ERROR: Error loading conanfile at '/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py': Unable to load conanfile in /Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "<frozen importlib._bootstrap_external>", line 1022, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py", line 14, in <module>
    from conans import ConanFile, CMake, tools
ImportError: cannot import name 'ConanFile' from 'conans' (/usr/local/Cellar/conan/2.9.2/libexec/lib/python3.13/site-packages/conans/__init__.py)

anuragpateriya@anurags-MBP build % cd ..
anuragpateriya@anurags-MBP qe-compiler % nano conanfile.py 
anuragpateriya@anurags-MBP qe-compiler % conan install .. --build=outdated -pr:h default -pr:b default
ERROR: Conanfile not found at /Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/conanfile.txt

[memsharded]

from conans import ConanFile, CMake, tools

You are still importing from conans which doesn't exist in Conan 2. You have 2 options:

• You do modernize the recipe, using the new imports such as from conan.tools.cmake import CMakeDeps and change the rest of the recipe acordingly, as described in the migration guide (by the way these changes should also work in Conan 1.X, they have been available for years in Conan 1.X, and it is possible to have recipes that work simultaneously in Conan 1 and Conan 2
• Stay in Conan 1.X to use those recipes.

[anurag-quantum]

apologies for posting incorrect logs. Please check these logs.

anuragpateriya@anurags-MBP qe-compiler % nano conanfile.py  <<------- here i changed the conanfile.

# Any modifications or derivative works of this code must retain this
# copyright notice, and modified files need to carry a notice indicating
# that they have been altered from the originals.
import os

from conan.tools.cmake import CMakeDeps, CMakeToolchain, CMake, cmake_layout

anuragpateriya@anurags-MBP qe-compiler % conan install .. --build=outdated -pr:h default -pr:b default ERROR: Conanfile not found at /Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/conanfile.txt anuragpateriya@anurags-MBP qe-compiler % conan install . --output-folder=build

======== Input profiles ========
Profile host:
[settings]
arch=armv8
build_type=Release
compiler=apple-clang
compiler.cppstd=gnu17
compiler.libcxx=libc++
compiler.version=15
os=Macos

Profile build:
[settings]
arch=armv8
build_type=Release
compiler=apple-clang
compiler.cppstd=gnu17
compiler.libcxx=libc++
compiler.version=15
os=Macos

ERROR: Error loading conanfile at '/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py': Unable to load conanfile in /Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
  File "<frozen importlib._bootstrap_external>", line 1022, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/Users/anuragpateriya/Desktop/qiskit_repo/qe-compiler/qe-compiler/conanfile.py", line 25, in <module>
    class QSSCompilerConan(ConanFile):
                           ^^^^^^^^^
NameError: name 'ConanFile' is not defined

[memsharded]

NameError: name 'ConanFile' is not defined

You still need the from conan import ConanFile