mathiasandClaude Sonnet 5
e9ad692418
Antigravity discovers skills via a path-entries JSON (~/.gemini/config/skills.json), not a symlink directory. One entry points at $AGENTS_DIR — the same managed, surfaces-filtered, collision-resolved directory Crush/OpenCode/Pi already read — so Antigravity sees exactly the same skill set as every other harness, for free. Requires jq; every other target in this script stays dependency-free on purpose, so wire_antigravity skips with a warning (not a hard failure) if jq is missing. Merges into skills.json rather than overwriting it: the file is documented as user-editable (json_configs.md — e.g. a personal skills dir), so a hand-added entry must survive a re-run. Was previously removed as "unused" (mathias/skills#41 — Antigravity usage picked back up). Mistral Vibe stays removed. Closes #41 Bump-Type: minor Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
278 lines
10 KiB
Bash
Executable File
278 lines
10 KiB
Bash
Executable File
#!/usr/bin/env bash
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# install.sh — bootstrap installer for the skills library.
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#
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# Usage (one-liner, hosts without Task):
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# curl -fsSL https://git.d-ma.be/mathias/skills/raw/branch/main/install.sh | bash
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#
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# Pinned to a specific tag:
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# SKILLS_REF=v0.4.0 bash install.sh
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#
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# Idempotent: re-running pulls the latest changes for the configured ref
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# (default: main) and re-wires the links.
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#
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# Claude Code is NOT wired here. It installs this repo as a plugin from the
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# marketplace this repo also hosts:
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#
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# /plugin marketplace add https://git.d-ma.be/mathias/skills.git
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# /plugin install skills@mathias
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#
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# That path carries the hooks and MCP server definitions too, which symlinks
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# cannot. This script covers the harnesses with no plugin system: Crush, Pi,
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# OpenCode, and Antigravity.
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#
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# Wiring model — one managed directory, one link per harness:
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#
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# ~/.agents/skills/tdd -> $CHECKOUT_DIR/skills/tdd (canonical; Pi reads the dir directly)
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# ~/.agents/skills/xlsx -> $OTHER_SOURCE/xlsx
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# ~/.config/crush/skills -> ~/.agents/skills
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# ~/.config/opencode/skills -> ~/.agents/skills
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#
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# Antigravity has no symlink-directory discovery — it reads a path-entries
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# JSON instead (~/.gemini/config/skills.json:
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# {"entries":[{"path":"..."}]}). One entry points at ~/.agents/skills, so it
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# sees exactly the same surfaces-filtered, collision-resolved set every other
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# harness does. Requires jq; skipped with a warning if jq is unavailable —
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# every other target in this script stays dependency-free on purpose.
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#
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# ~/.agents/skills was itself a link to this checkout until #27. That encoded
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# an assumption nobody had stated — that this checkout is the ONLY source of
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# skills on the host — and on flamingo the only way to install this library
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# was to displace Anthropic's official set, which lived in Crush's directory.
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# A real directory of per-skill links serves several sources at once: total
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# links are N + one per harness, still not N x harnesses (#23's actual point).
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#
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# Extra sources come from SKILLS_EXTRA_SOURCES, a colon-separated list of
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# directories each holding <skill>/SKILL.md. The checkout is always first and
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# always wins a name collision — but the collision is logged, never resolved
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# in silence, because quietly picking one is how stale content wins.
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#
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# CHECKOUT_DIR deliberately defaults OUTSIDE any file-synced or
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# cross-platform-shared directory. Do not "fix" it to point into ~/dev: on a
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# fleet whose workspace is shared between macOS (/Users/...) and Linux
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# (/home/...), an absolute link stored there is broken on one side by
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# construction. See mathias/skills#23.
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set -euo pipefail
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REPO_URL="${SKILLS_REPO_URL:-https://git.d-ma.be/mathias/skills.git}"
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REF="${SKILLS_REF:-main}"
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CHECKOUT_DIR="${SKILLS_CHECKOUT_DIR:-$HOME/.local/share/skills}"
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AGENTS_DIR="${AGENTS_SKILLS_DIR:-$HOME/.agents/skills}"
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CRUSH_DIR="${CRUSH_SKILLS_DIR:-$HOME/.config/crush/skills}"
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OPENCODE_DIR="${OPENCODE_SKILLS_DIR:-$HOME/.config/opencode/skills}"
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ANTIGRAVITY_SKILLS_JSON="${ANTIGRAVITY_SKILLS_JSON:-$HOME/.gemini/config/skills.json}"
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EXTRA_SOURCES="${SKILLS_EXTRA_SOURCES:-}"
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# Recorded beside the managed directory rather than inside it: a stray file in
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# there would look like a skill to every harness reading the dir.
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SOURCES_MANIFEST="$(dirname "$AGENTS_DIR")/$(basename "$AGENTS_DIR")-sources"
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log() { printf '[skills] %s\n' "$*"; }
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ensure_checkout() {
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# Wiring an existing working checkout (task install) must not fetch or
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# move HEAD — that would discard in-progress work.
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if [ "${SKILLS_SKIP_FETCH:-}" = "1" ]; then
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[ -d "$CHECKOUT_DIR/skills" ] || { log "no skills/ under $CHECKOUT_DIR"; exit 1; }
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log "using $CHECKOUT_DIR as-is (SKILLS_SKIP_FETCH=1)"
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return
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fi
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if [ -d "$CHECKOUT_DIR/.git" ]; then
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log "updating $CHECKOUT_DIR"
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git -C "$CHECKOUT_DIR" fetch --tags --quiet
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git -C "$CHECKOUT_DIR" checkout --quiet "$REF"
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if git -C "$CHECKOUT_DIR" symbolic-ref -q HEAD >/dev/null; then
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# on a branch — fast-forward
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git -C "$CHECKOUT_DIR" pull --ff-only --quiet
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fi
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else
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log "cloning $REPO_URL into $CHECKOUT_DIR (ref=$REF)"
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mkdir -p "$(dirname "$CHECKOUT_DIR")"
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git clone --quiet "$REPO_URL" "$CHECKOUT_DIR"
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git -C "$CHECKOUT_DIR" checkout --quiet "$REF"
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fi
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}
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count_skills() {
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find "$CHECKOUT_DIR/skills" -mindepth 2 -maxdepth 2 -name SKILL.md 2>/dev/null | wc -l | tr -d ' '
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}
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# sources — every configured source directory, primary first, one per line.
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sources() {
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printf '%s\n' "$CHECKOUT_DIR/skills"
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[ -n "$EXTRA_SOURCES" ] || return 0
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# printf '%s\n' deliberately: without the trailing newline `read` hits EOF
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# on the final entry and the loop body never runs for it.
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printf '%s\n' "$EXTRA_SOURCES" | tr ':' '\n' | while IFS= read -r src; do
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[ -n "$src" ] || continue
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if [ -d "$src" ]; then
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printf '%s\n' "$src"
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else
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log "extra source $src does not exist — skipping"
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fi
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done
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}
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# prepare_agents_dir — the canonical location is a real directory now. A host
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# still on the single-link wiring is migrated in place.
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prepare_agents_dir() {
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if [ -L "$AGENTS_DIR" ]; then
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log "migrating $AGENTS_DIR from the single-link wiring to a per-skill directory"
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rm -f "$AGENTS_DIR"
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elif [ -e "$AGENTS_DIR" ] && [ ! -d "$AGENTS_DIR" ]; then
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log "REFUSING to replace $AGENTS_DIR — it exists and is not a directory"
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return 1
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fi
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mkdir -p "$AGENTS_DIR"
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}
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# wire_skills — one symlink per skill, from every configured source.
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wire_skills() {
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local src_list desired name src dir link target
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src_list="$(mktemp)"
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sources > "$src_list"
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desired=""
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while IFS= read -r src; do
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[ -d "$src" ] || continue
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for dir in "$src"/*/; do
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[ -f "$dir/SKILL.md" ] || continue
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name="$(basename "$dir")"
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target="${dir%/}"
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# A skill declares its surfaces; this installer serves exactly one of
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# them. A chat-only skill linked into Crush can never fire and competes
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# for selection with ones that can (#29). A source with no declaration
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# is foreign — Anthropic's official set has no reason to know this
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# convention — so silence means "link it".
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surfaces="$(sed -n 's/^surfaces:[[:space:]]*//p' "$dir/SKILL.md" | head -1)"
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if [ -n "$surfaces" ] && ! printf '%s' "$surfaces" | tr -d '[]' | tr ',' ' ' | grep -qw library; then
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log "skipping $name — surfaces: $surfaces does not include the library"
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continue
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fi
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if printf '%s' "$desired" | grep -qx -- "$name"; then
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log "COLLISION: $name is offered by $target too; keeping $AGENTS_DIR/$name -> $(readlink "$AGENTS_DIR/$name" 2>/dev/null || echo '?')"
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continue
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fi
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link="$AGENTS_DIR/$name"
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if [ -L "$link" ]; then
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if [ "$(readlink "$link")" = "$target" ]; then
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desired="$desired$name
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"
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continue
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fi
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rm -f "$link"
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elif [ -e "$link" ]; then
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log "unmanaged: $link is not a symlink — left in place; move it aside to let $target take the name"
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continue
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fi
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ln -s "$target" "$link"
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desired="$desired$name
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"
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done
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done < "$src_list"
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rm -f "$src_list"
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# Removing a skill from a source must remove its link, or the previous
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# generation's problem (links resolving to nothing, invisible to git)
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# returns in a new shape.
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for link in "$AGENTS_DIR"/*; do
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[ -e "$link" ] || [ -L "$link" ] || continue
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name="$(basename "$link")"
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if [ ! -L "$link" ]; then
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log "unmanaged: $link is not a symlink and no source offers it — left in place"
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continue
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fi
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printf '%s' "$desired" | grep -qx -- "$name" && continue
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rm -f "$link"
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log "pruned $name — no configured source offers it any more"
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done
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sources > "$SOURCES_MANIFEST"
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# Reported through a global, not stdout: wire_skills logs collisions and
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# unmanaged entries as it goes, and capturing its stdout for a count would
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# swallow exactly the warnings this change exists to surface.
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LINKED_COUNT=$(printf '%s' "$desired" | grep -c . || true)
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}
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# link_dir <link_path> <target_path>
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# Replaces whatever is there — including a directory left behind by the old
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# per-skill wiring — with a single symlink.
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link_dir() {
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local link="$1" target="$2"
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if [ -L "$link" ]; then
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[ "$(readlink "$link")" = "$target" ] && return
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rm -f "$link"
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elif [ -d "$link" ]; then
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# Refuse to discard a directory holding anything but symlinks: that
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# would be someone's real skills, not our old wiring.
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if find "$link" -mindepth 1 -maxdepth 1 ! -type l | grep -q .; then
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log "REFUSING to replace $link — it holds non-symlink entries; move them and re-run"
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return 1
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fi
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find "$link" -mindepth 1 -maxdepth 1 -type l -delete
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rmdir "$link"
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elif [ -e "$link" ]; then
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rm -f "$link"
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fi
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mkdir -p "$(dirname "$link")"
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ln -s "$target" "$link"
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log "linked $link → $target"
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}
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# wire_antigravity — register $AGENTS_DIR in Antigravity's skills.json.
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# Merges rather than overwrites: skills.json is a documented user-editable
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# config (json_configs.md), so a hand-added entry (e.g. a personal skills
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# dir) must survive a re-run untouched.
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wire_antigravity() {
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if ! command -v jq >/dev/null 2>&1; then
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log "Antigravity: jq not found — skipping (needed to merge $ANTIGRAVITY_SKILLS_JSON safely)"
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return
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fi
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local existing already updated
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mkdir -p "$(dirname "$ANTIGRAVITY_SKILLS_JSON")"
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if [ -s "$ANTIGRAVITY_SKILLS_JSON" ]; then
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existing="$(cat "$ANTIGRAVITY_SKILLS_JSON")"
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else
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existing='{}'
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fi
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already="$(printf '%s' "$existing" | jq --arg p "$AGENTS_DIR" \
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'[.entries // [] | .[] | select(.path == $p)] | length' 2>/dev/null)" || {
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log "Antigravity: $ANTIGRAVITY_SKILLS_JSON is not valid JSON — leaving it untouched"
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return 1
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}
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if [ "$already" -gt 0 ]; then
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log "Antigravity: $AGENTS_DIR already registered in $ANTIGRAVITY_SKILLS_JSON"
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return
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fi
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updated="$(printf '%s' "$existing" | jq --arg p "$AGENTS_DIR" \
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'.entries = ((.entries // []) + [{path: $p}])')"
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printf '%s\n' "$updated" > "$ANTIGRAVITY_SKILLS_JSON"
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log "Antigravity: registered $AGENTS_DIR in $ANTIGRAVITY_SKILLS_JSON"
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}
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main() {
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ensure_checkout
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# Canonical location. Pi reads ~/.agents/skills directly, so it needs no
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# harness-specific link of its own.
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prepare_agents_dir
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LINKED_COUNT=0
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wire_skills
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link_dir "$CRUSH_DIR" "$AGENTS_DIR"
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link_dir "$OPENCODE_DIR" "$AGENTS_DIR"
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wire_antigravity
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log "done — $LINKED_COUNT skill(s) linked from $(sources | wc -l | tr -d ' ') source(s), ref=$REF"
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log "Claude Code: install the plugin instead — /plugin marketplace add $REPO_URL"
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}
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main "$@"
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