45 lines
1.5 KiB
Fish
45 lines
1.5 KiB
Fish
# Copyright (C) 2026 Rootiest
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# SPDX-License-Identifier: AGPL-3.0-or-later
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# COMPONENT
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# autoexec/venv
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#
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# SYNOPSIS
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# __auto_source_fallback_venv
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#
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# DESCRIPTION
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# Event handler that auto-activates a .venv Python virtual environment when
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# entering a directory. Deactivates when leaving the project tree. Skipped
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# when direnv is already managing the directory.
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#
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# EXAMPLE
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# # Triggered automatically on directory change; not called directly.
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# cd ~/myproject # activates .venv if present
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function __auto_source_fallback_venv --on-variable PWD
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status --is-command-substitution; and return
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# Opinionated guard (C2): no automatic venv activation when disabled.
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__fish_config_op_enabled (status current-function); or return
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# 1. Skip if direnv is already managing this directory
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if set -q DIRENV_DIR; or test -e ".envrc"
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return
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end
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# 2. If we are already in a venv, check if we've left its tree
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if set -q VIRTUAL_ENV
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# Check if the current PWD is still within the directory that owns the venv
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# (Assuming the venv is at the root of the project)
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set -l venv_root (string replace -r '/.venv$' '' $VIRTUAL_ENV)
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if not string match -q "$venv_root*" "$PWD"
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type -q deactivate; and deactivate
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end
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return
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end
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# 3. Only source the venv if we aren't already in one
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if test -e ".venv/bin/activate.fish"
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source .venv/bin/activate.fish
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end
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end
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