Tool Specification Bundle Laravel Package

Product Decisions This Supports

• Build vs. buy vs. borrow for business-rule composition. The specification pattern (composable AND/OR/NOT predicates over domain objects) is the kind of thing teams either hand-roll badly or over-engineer. This bundle is best framed as a reference implementation and scaffolding source, not a dependency to install — a starting point for our own thin internal package.
• Standardizing how eligibility and filtering logic is expressed. Directly relevant if the roadmap includes any of: pricing/discount eligibility, KYC and onboarding rules, entitlement and plan gating, catalog/search filtering, segmentation for feature flags, or approval workflows. These all converge on "compose named business rules and reuse them across validation, queries, and UI."
• DDD adoption / domain-layer cleanup. Supports the decision to move rule logic out of controllers, form requests, and query builders into named, testable, composable domain objects. This is a maintainability bet, not a user-facing feature.
• Architecture standardization across squads. If multiple teams are inventing their own isEligible() helpers, adopting one vocabulary (Specification, isSatisfiedBy) reduces review friction and makes rules auditable by non-authors.
• Roadmap de-risking for "configurable rules" asks. When product asks for customer-configurable business rules, the specification pattern is the cheap intermediate step before a rules engine. This package lets us prototype that vocabulary without committing to a rules-engine vendor.

Important qualification: this is a Symfony bundle, not a Laravel package. It ships Symfony DI/service-handler wiring. On a Laravel codebase its integration value is near zero — we would extract the pattern, not the package.

When to Consider This Package

Consider it (as a fork, vendor, or read-only reference) when:

• The stack is Symfony, and we're comfortable with bundle registration and service tags.
• There is a genuine domain/infrastructure separation already in place; the pattern loses its value inside fat models or god-services.
• Rule complexity is trending up — three or more places need the same "is this customer eligible / is this item in scope" question, and they currently disagree.
• We need a fast, low-cost proof of concept of the vocabulary before deciding whether to build an internal package.
• We are willing to vendor or fork and own the code. With 2 stars and 0 dependents, treat upstream as an abandoned source of inspiration.
• Legal has cleared the license. NOASSERTION is a hard stop until reviewed — it may not be a standard OSI license, and we cannot ship it in a distributed product on assumption.

Look elsewhere (or hand-roll ~150 lines) when:

• The stack is Laravel or framework-agnostic PHP — there is no Laravel integration here.
• The team has no DDD structure; the pattern becomes ceremony that reviewers route around.
• We need maintenance guarantees, an active maintainer, security response, or a support path — none exist here.
• The requirement is actually a query/filtering problem (e.g., dynamic SQL filters). A specification library solves rule composition, not query building; reach for a query-builder or dedicated filter package instead.
• The requirement is a full rules engine with versioning and non-developer authoring — this is underpowered for that.
• Compliance requires a clear, auditable license and a documented supply chain.

Adoption verdict: Do not add as a runtime dependency. Spike it for 1–2 days, extract the pattern into an internal Domain\Specification namespace with our own tests, and credit the source. Opportunity score (~18/100) and adoption signals (0 dependents) both say "reference, not platform."

How to Pitch It (Stakeholders)

To executives: This is a small, free, unmaintained open-source component that demonstrates a well-known way of writing business rules so they can be combined and reused. It is not a strategic platform bet and carries no vendor lock-in. The recommendation is to spend roughly one engineer-week extracting the pattern into our own code rather than depending on the library. Upside: fewer places where eligibility and pricing rules are duplicated and drift apart, which is a recurring source of support tickets and audit findings. Principal risk is licensing ambiguity (NOASSERTION), which we resolve by writing our own implementation and using this only as a design reference — no code shipped, no legal exposure.

To engineering: It's a Symfony bundle providing handlers for the specification pattern in a DDD layering. Small surface area, conceptually simple: named domain predicates with and/or/not combinators and isSatisfiedBy(). We are not installing it — the repo is effectively abandoned (2 stars, 0 dependents, unclear license), and we're not on Symfony for this. Ask: one engineer, one week, to build an internal Specification abstraction with composition operators, a small test suite demonstrating reuse between a validation path and a query path, and a short ADR documenting the convention. Success looks like one real feature (e.g., discount eligibility) expressed as named specifications that QA can read and product can reason about — and the same specification reused in two different call sites.