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8 changes: 7 additions & 1 deletion installers/nix-setup-template.sh
Original file line number Diff line number Diff line change
Expand Up @@ -51,7 +51,13 @@ chmod +x ../python $PYTHON_MAJOR $PYTHON_MAJOR_DOT_MINOR $PYTHON_MAJORMINOR pyth

echo "Upgrading pip..."
export PIP_ROOT_USER_ACTION=ignore
./python -m ensurepip

if [ -d "$(./python -c 'import site; print(site.getsitepackages()[0])')/pip" ]; then
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Copilot AI Nov 25, 2025

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The pip directory check uses command substitution without proper error handling. If the Python command fails (e.g., site module not available, or getsitepackages() returns an empty list), the script will continue with potentially incorrect behavior due to set -e being active. The command should be wrapped with error handling or the result should be validated.

Consider using a safer approach:

SITE_PACKAGES=$(./python -c 'import site; print(site.getsitepackages()[0])' 2>/dev/null) || SITE_PACKAGES=""
if [ -n "$SITE_PACKAGES" ] && [ -d "$SITE_PACKAGES/pip" ]; then
  echo "pip directory found in site-packages, skipping ensurepip."
else
  echo "pip directory not found, running ensurepip..."
  ./python -m ensurepip
fi
Suggested change
if [ -d "$(./python -c 'import site; print(site.getsitepackages()[0])')/pip" ]; then
SITE_PACKAGES=$(./python -c 'import site; s=site.getsitepackages(); print(s[0] if s else "")' 2>/dev/null) || SITE_PACKAGES=""
if [ -n "$SITE_PACKAGES" ] && [ -d "$SITE_PACKAGES/pip" ]; then

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echo "pip directory found in site-packages, skipping ensurepip."
else
echo "pip directory not found, running ensurepip..."
./python -m ensurepip
fi
./python -m pip install --upgrade --force-reinstall pip --disable-pip-version-check --no-warn-script-location

Comment on lines 61 to 62
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Copilot AI Nov 25, 2025

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After conditionally skipping ensurepip, the script still runs pip install --upgrade --force-reinstall pip. This creates a logical inconsistency: if pip already exists (ensurepip skipped), the force-reinstall makes the skip pointless. If pip doesn't exist (ensurepip runs), the upgrade is redundant since ensurepip just installed pip. Additionally, if ensurepip was skipped because pip was detected but pip is broken or incomplete, this line may fail.

Consider verifying pip is functional after the conditional ensurepip step, or reconsider the logic flow to ensure pip is properly available before attempting to upgrade it.

Suggested change
./python -m pip install --upgrade --force-reinstall pip --disable-pip-version-check --no-warn-script-location
# Verify pip is functional before attempting to upgrade
if ./python -m pip --version >/dev/null 2>&1; then
./python -m pip install --upgrade --force-reinstall pip --disable-pip-version-check --no-warn-script-location
else
echo "Error: pip is not functional after ensurepip. Aborting pip upgrade."
exit 1
fi

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echo "Create complete file"
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