dd9efff98b
source ./activate and . .\activate.ps1 always run setup, and setup always runs `python -m pm.cli install`. An explicit install re-hashes every published tool entry so it can repair a corrupted one. On this machine that hash reads about 550 MiB and takes 6.0 of the 6.6 seconds, even when nothing changed. Shell activation now passes --trust-recorded and trusts the digest the install recorded, the same check startup already uses. A missing tool is still installed and a stale venv is still rebuilt. `hermes pm install` and `hermes update` keep the byte check, and the flag refuses names, --extra, and --target so it cannot narrow an install someone asked for by name. Measured on this machine, already up to date: the activation path drops from 6.6 s to 0.9 s. A bare `python -m pm.cli install` stays at 7.2 s. The remaining 0.9 s is process startup and imports, not hashing.
185 lines
7.7 KiB
Bash
Executable File
185 lines
7.7 KiB
Bash
Executable File
#!/usr/bin/env bash
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# ============================================================================
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# venv-style activation for the Hermes dev environment (pm-managed tools).
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#
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# source ./activate (bash / zsh, repo root)
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# .\activate.ps1 (PowerShell)
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#
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# Emits the composed pm env (PATH + tool vars) into the CURRENT shell, with
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# save/restore: `deactivate` undoes exactly what activation changed.
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#
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# `hermes` becomes a shell function for this checkout. It runs only while the
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# shell is inside this worktree and refuses outside it, so a sibling worktree
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# keeps its own command. A prompt prefix names the worktree.
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#
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# Sync through setup before selecting the environment. PM owns freshness;
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# activation does not maintain a second dependency stamp. It trusts the
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# recorded tool digest instead of re-hashing every entry. `hermes pm
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# install` and `hermes update` keep that check.
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# ============================================================================
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_HERMES_REPO="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# Setup runs in a child: failures must not exit or partially activate the
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# caller's shell, and activation must not republish launchers or shell config.
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if ! (
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unset PYTHONHOME PYTHONPATH VIRTUAL_ENV
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bash "$_HERMES_REPO/setup-hermes.sh" --runtime-only
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) >&2; then
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printf '%s\n' 'activate: setup failed; shell environment unchanged' >&2
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return 1 2>/dev/null || exit 1
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fi
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# Guard against double-sourcing: venv activate precedent (re-activating is a
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# no-op re-save; we keep it idempotent by deactivating first). Key on the
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# function, not the sentinel: child shells inherit __HERMES_ACTIVATED from an
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# activated parent but never the function, and there is nothing to undo there.
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if [ "$(type -t deactivate 2>/dev/null)" = "function" ]; then
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deactivate
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fi
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# Bootstrap Python only emits the environment; it does not install anything.
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_hermes_repo="$_HERMES_REPO"
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_hermes_py=""
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for _hermes_candidate in "$_hermes_repo/.venv/bin/python" "$_hermes_repo/.venv/Scripts/python.exe" \
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"$_hermes_repo/venv/bin/python" "$_hermes_repo/venv/Scripts/python.exe"; do
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[ -x "$_hermes_candidate" ] && { _hermes_py="$_hermes_candidate"; break; }
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done
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if [ -z "$_hermes_py" ]; then
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for _hermes_store in "${HERMES_RUNTIME_DIR:-}" "$_hermes_repo/../tools" "${HERMES_HOME:-$HOME/.hermes}/tools"; do
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[ -n "$_hermes_store" ] || continue
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for _hermes_candidate in "$_hermes_store"/python-*/bin/python3 "$_hermes_store"/python-*/python.exe "$_hermes_store"/python-*/bin/python "$_hermes_store"/python-*/bin/python.exe; do
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[ -x "$_hermes_candidate" ] && { _hermes_py="$_hermes_candidate"; break; }
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done
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[ -n "$_hermes_py" ] && break
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done
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fi
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if [ -z "$_hermes_py" ]; then
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echo "activate: no bootstrap Python found; run setup-hermes.sh" >&2
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return 1 2>/dev/null || exit 1
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fi
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# --- emit export lines from `pm env` ---
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_hermes_json="$(PYTHONHOME= PYTHONPATH="$_hermes_repo" "$_hermes_py" -m pm.environments)"
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if [ -z "$_hermes_json" ] || [ "${_hermes_json#*{}" = "$_hermes_json" ]; then
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echo "activate: could not read pm env (run ./setup-hermes.sh first)" >&2
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unset _hermes_repo _hermes_os _hermes_arch _hermes_target _hermes_store _hermes_py _hermes_json
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return 1 2>/dev/null || exit 1
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fi
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_hermes_keys="$(printf '%s' "$_hermes_json" | "$_hermes_py" -c 'import json,sys; print(" ".join(json.load(sys.stdin)))' \
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| tr ' ' '\n' | grep -E '^[A-Za-z_][A-Za-z0-9_]*$' | tr '\n' ' ')"
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[ -n "$_hermes_keys" ] || _hermes_keys="PATH"
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# --- snapshot what we are about to change (deactivate restores this) ---
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# __HERMES_ACTIVATED is part of the composed env below (it carries the
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# installed-state path this environment was built from), so it is snapshotted
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# and exported with every other key — no separate assignment here.
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__HERMES_SAVED_PATH="$PATH"
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for _hermes_k in $_hermes_keys; do
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eval "__HERMES_SAVED_$_hermes_k=\"\${$_hermes_k+set}\""
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eval "__HERMES_PRIOR_$_hermes_k=\${$_hermes_k-__HERMES_UNSET__}"
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done
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eval "$(printf '%s' "$_hermes_json" | "$_hermes_py" -c '
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import json, sys, shlex, re
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for k, v in json.load(sys.stdin).items():
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# Windows carries names like ProgramFiles(ARM) that are not valid
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# bash identifiers — skip them (they pass through untouched).
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if not re.fullmatch(r"[A-Za-z_][A-Za-z0-9_]*", k):
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continue
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print("export %s=%s" % (k, shlex.quote(str(v))))')"
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# This checkout, not whichever `hermes` PATH finds. A function beats PATH, an
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# alias, and a hashed command, including the MSIX execution alias.
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__HERMES_WORKTREE="$_hermes_repo"
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# The branch names the worktree. A checkout cannot share a branch with another.
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__HERMES_WORKTREE_NAME="$(git -C "$_hermes_repo" rev-parse --abbrev-ref HEAD 2>/dev/null || :)"
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if [ -z "$__HERMES_WORKTREE_NAME" ] || [ "$__HERMES_WORKTREE_NAME" = HEAD ]; then
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__HERMES_WORKTREE_NAME="$(basename "$_hermes_repo")"
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fi
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__HERMES_SAVED_PS1="${PS1-__HERMES_UNSET__}"
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__HERMES_SAVED_PROMPT_COMMAND="${PROMPT_COMMAND-__HERMES_UNSET__}"
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_hermes_worktree_here() {
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_hermes_top="$(git rev-parse --show-toplevel 2>/dev/null)" || return 1
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[ "$(cd "$_hermes_top" && pwd -P)" = "$(cd "$__HERMES_WORKTREE" && pwd -P)" ]
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}
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hermes() {
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_hermes_worktree_here || {
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printf '%s\n' "hermes: $(pwd) is outside $__HERMES_WORKTREE; refusing (the installed command is hidden while this checkout is active)" >&2
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return 1
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}
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(
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cd "$__HERMES_WORKTREE" || exit 1
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if [ -n "${PYTHON-}" ]; then
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exec "$PYTHON" hermes "$@"
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elif [ -x .venv/Scripts/python.exe ]; then
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exec .venv/Scripts/python.exe hermes "$@"
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elif [ -x .venv/bin/python ]; then
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exec .venv/bin/python hermes "$@"
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elif [ -x venv/Scripts/python.exe ]; then
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exec venv/Scripts/python.exe hermes "$@"
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elif [ -x venv/bin/python ]; then
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exec venv/bin/python hermes "$@"
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else
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exec python hermes "$@"
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fi
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)
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}
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_hermes_prompt() {
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if [ "$__HERMES_SAVED_PS1" = "__HERMES_UNSET__" ]; then
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_hermes_base_ps1=""
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else
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_hermes_base_ps1="$__HERMES_SAVED_PS1"
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fi
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if _hermes_worktree_here; then
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PS1="($__HERMES_WORKTREE_NAME) $_hermes_base_ps1"
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else
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PS1="$_hermes_base_ps1"
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fi
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}
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if [ -n "${PROMPT_COMMAND-}" ]; then
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PROMPT_COMMAND="_hermes_prompt; ${PROMPT_COMMAND}"
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else
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PROMPT_COMMAND=_hermes_prompt
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fi
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_hermes_prompt
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deactivate() {
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export PATH="$__HERMES_SAVED_PATH"
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for _hermes_k in $__HERMES_KEY_LIST; do
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eval "_hermes_was=\"\$__HERMES_SAVED_$_hermes_k\""
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eval "_hermes_old=\"\$__HERMES_PRIOR_$_hermes_k\""
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if [ "$_hermes_was" != "set" ]; then
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unset "$_hermes_k"
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else
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export "$_hermes_k=$_hermes_old"
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fi
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unset "__HERMES_SAVED_$_hermes_k" "__HERMES_PRIOR_$_hermes_k"
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done
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if [ "$__HERMES_SAVED_PS1" = "__HERMES_UNSET__" ]; then
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unset PS1
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else
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PS1="$__HERMES_SAVED_PS1"
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fi
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if [ "$__HERMES_SAVED_PROMPT_COMMAND" = "__HERMES_UNSET__" ]; then
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unset PROMPT_COMMAND
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else
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PROMPT_COMMAND="$__HERMES_SAVED_PROMPT_COMMAND"
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fi
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unset __HERMES_SAVED_PATH __HERMES_KEY_LIST __HERMES_ACTIVATED \
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__HERMES_WORKTREE __HERMES_WORKTREE_NAME \
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__HERMES_SAVED_PS1 __HERMES_SAVED_PROMPT_COMMAND
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unset -f deactivate hermes _hermes_worktree_here _hermes_prompt
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unset _hermes_k _hermes_was _hermes_old _hermes_top
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}
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# remember the key list for deactivate (kept out of the loop vars above)
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__HERMES_KEY_LIST="$_hermes_keys"
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unset _hermes_repo _hermes_os _hermes_arch _hermes_target _hermes_store \
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_hermes_py _hermes_json _hermes_keys _hermes_k _hermes_entry _hermes_venvpy \
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_hermes_winarch _hermes_top
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