fix: update R kernel logic for Pixi >= 0.26.0

prefix-dev/pixi#1582

src/pixi_kernel/__main__.py

@@ -11,7 +11,7 @@
 from ipykernel.ipkernel import IPythonKernel
 from ipykernel.kernelapp import IPKernelApp
 
-from .pixi import PixiDiscoveryError, find_project_manifest
+from .pixi import PixiDiscoveryError, find_pixi_version, find_project_manifest
 
 logger = logging.getLogger(__name__)
 
@@ -43,6 +43,7 @@ def main() -> None:
     kernel_display_name = sys.argv[2]
 
     try:
+        pixi_version = find_pixi_version(kernel_display_name)
         manifest_path = find_project_manifest(
             cwd=Path.cwd(),
             package_name=package_name,
@@ -63,6 +64,10 @@ def main() -> None:
         env["R_LIBS_SITE"] = r_libs_path
         env["R_LIBS_USER"] = r_libs_path
 
+        if pixi_version >= (0, 26, 0):
+            # Remove single quotes from R kernel spec arguments: https://github.com/prefix-dev/pixi/pull/1582
+            args = [arg.replace("'", "") for arg in args]
+
     logger.info(f"launching {kernel_display_name} kernel with {args}")
 
     if sys.platform == "win32":

src/pixi_kernel/pixi.py

@@ -4,7 +4,7 @@
 import shutil
 import subprocess
 from pathlib import Path
-from typing import List, Optional
+from typing import List, Optional, Tuple
 
 import msgspec
 
@@ -40,7 +40,7 @@ class ProjectInfo(msgspec.Struct, frozen=True, kw_only=True):
     manifest_path: str
 
 
-def find_project_manifest(*, cwd: Path, package_name: str, kernel_display_name: str) -> Path:
+def find_pixi_version(kernel_display_name: str) -> Tuple[str, str, str]:
     # Ensure Pixi is in PATH
     if shutil.which("pixi") is None:
         raise PixiDiscoveryError(PIXI_NOT_FOUND.format(kernel_display_name=kernel_display_name))
@@ -63,7 +63,10 @@ def find_project_manifest(*, cwd: Path, package_name: str, kernel_display_name:
             )
         )
     logger.info(f"found Pixi {pixi_version}")
+    return (major, minor, patch)
+
 
+def find_project_manifest(*, cwd: Path, package_name: str, kernel_display_name: str) -> Path:
     # Find project's manifest file
     candidate_dirs = [cwd, *cwd.parents]
     for dir in candidate_dirs: