Gentoo Linux
Enable an agent to recognise a Gentoo Linux installation, assess its configuration and maintenance state, and determine which package, build and system changes are appropriate.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
recalled by Codex without web access - no source was read
Researched by: Codex
Purpose and description
Enable an agent to recognise a Gentoo Linux installation, assess its configuration and maintenance state, and determine which package, build and system changes are appropriate.
Gentoo Linux is a Linux distribution built around the Portage package management system, enabling users to customize installed software through source-based builds, selectable features and binary packages.
It can be Identify a Gentoo installation and assemble evidence for its profile, repositories and package state.; Explain why Portage selects, excludes or rebuilds a package under the effective configuration.; Preview package, USE-flag and profile changes and identify dependency or compatibility consequences.; Assess whether a binary package or local build is suitable for the installation target.; Plan authorised updates, configuration merges and dependency cleanup with recovery checkpoints.; Evaluate installed packages against applicable Gentoo security information and record unresolved exposure..
Distinguishing features
Establish Gentoo identity from installation provenance, release metadata and package-management evidence together; Portage use alone does not settle whether a system is Gentoo or a derivative.
Check whether package management uses Portage with ebuild repositories and Gentoo profile configuration, rather than identifying the distribution merely from its Linux kernel.
Check whether effective USE flags participate in package feature selection and dependency decisions; record their resolved values rather than only a global configuration file.
Represent maintenance through repository state, installed versions and outstanding transitions rather than assuming a single distribution release number describes the system.
Separate distribution identity from package acquisition method: source builds and binary-package installation require different provenance checks without necessarily implying different distributions.
Scope
+ Distribution identity, installation provenance and relationships to Gentoo derivatives
+ Portage configuration, ebuild repositories and installed-package state
+ Profiles, USE flags and package-specific configuration
+ Source builds, binary-package provenance and target compatibility
+ Gentoo installation, update, recovery and security-maintenance decisions
- Physical host hardware, power systems and peripheral maintenance
- General Linux kernel architecture and upstream kernel development
- Internal behaviour and application data of individual software packages
- Governance and legal identity of the Gentoo organisation
- Independent distributions derived from Gentoo
- Generic network and service administration beyond Gentoo integration
Characteristics
- Identity and installation context
- Gentoo Linux host installation | Gentoo Linux container root | derivative | unresolved Prevents treating a derivative or an isolated filesystem as an ordinary Gentoo host.
- Selected profile
- Repository-qualified profile path and its parent profile relationships Provides context for inherited defaults, package constraints and system configuration.
- Target architecture and ABI
- Recorded architecture, CHOST and applicable ABI selections Constrains compatible packages, toolchains and binary artifacts.
- Effective package feature selection
- Per-package enabled, disabled, forced and masked USE flags with configuration origins Explains feature availability, dependency changes and rebuild requirements.
- Repository provenance
- Repository name, upstream location, revision or snapshot, and local modifications Identifies the package definitions on which an installation or update decision depends.
- Package acceptance policy
- Effective keyword, mask, unmask and license acceptance settings with per-package exceptions Explains why candidate versions are available or excluded.
- Package acquisition policy
- Source preferred | binaries preferred with source fallback | binaries required | package-specific policy Determines artifact checks, build requirements and fallback behaviour.
- Requested and installed package sets
- World selections and named sets related to installed package versions, slots and repositories Distinguishes intentionally retained software from dependency state.
- Last successful repository synchronisation age
- Hours since recorded successful synchronisation, per repository; unknown if unrecorded Qualifies how current package and update assessments are.
- Maintenance readiness
- Assessed ready | blocked | partially completed | unassessed, with recorded reasons Connects unresolved Gentoo maintenance tasks to permission for further changes.
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 17 findings · 33 questions.
Gentoo identity and boundaries Establishes what is being recognised as Gentoo and which installation context is under assessment.
Gentoo identity must remain distinct from its Linux kernel, its package manager and distributions that reuse its tooling.
Distribution identity
Collects evidence identifying Gentoo and distinguishing derivative systems.
Identity evidence
Record installation origin, release metadata and repository relationships, including conflicting evidence.
- Which installation artifacts and system metadata support identifying this system as Gentoo Linux? provenance
- Does the system follow Gentoo directly, or does a derivative supply its identity and maintenance policy? boundary
Installation context
Separates distribution-level properties from the environment of a particular installation.
Managed root and host
Identify the filesystem and execution environment to which Gentoo package and boot decisions apply.
- Which root filesystem and Portage configuration are the subject of this assessment? boundary
- Is this a booted host, container root or installation environment, and which kernel and boot responsibilities belong to its surrounding host? boundary
Profiles and feature policy Models how profile inheritance and local configuration determine the effective Gentoo package policy.
Gentoo installations cannot be assessed reliably from package names alone because profile and USE choices alter their meaning.
Profile inheritance
Records the selected profile and the defaults or constraints it contributes.
Effective profile context
Relate the profile to architecture, ABI, system package requirements and local overrides.
- Which repository-qualified profile and parent profiles supply this installation's effective defaults? provenance
- Which architecture, ABI, C library and init-system choices must remain compatible when changing this profile? action
Package feature and acceptance policy
Resolves package features and version eligibility across inherited and local settings.
Resolved package policy
Record effective USE selections, keyword acceptance, masks and license acceptance with their origins.
- For the package under consideration, which USE flags are effective, and which are forced or masked by inherited policy? definition
- Which keyword, mask or license settings explain why a candidate version is accepted or rejected? definition
- What dependency and rebuild changes would follow from the proposed package-specific exception? action
Portage package graph Connects ebuild provenance, requested software and installed dependency state.
An agent needs to distinguish what the user requested from what dependency resolution installed before recommending upgrades or removal.
Ebuild repositories
Identifies which repositories and package definitions inform Portage decisions.
Repository selection and origin
Track official and additional repositories, their observed states and local changes.
- Which repository and ebuild revision provide each package selected for the proposed operation? provenance
- Where repositories offer overlapping packages, which configuration determines selection and what local modifications affect it? definition
Requested and installed state
Relates world selections and package sets to installed versions and dependency constraints.
Dependency and retention intent
Record package retention intent, slots, dependency blockers and proposed graph changes.
- Which packages are explicitly selected through world or named sets, and which remain solely as dependencies? definition
- Which slot, subslot, blocker or dependency constraints prevent the intended package transaction? action
- Which packages would dependency cleanup remove, and does that match the operator's retention intent? action
Builds and binary artifacts Assesses how Gentoo packages are produced or acquired and whether resulting artifacts fit their target.
Build configuration and binary compatibility directly affect whether a Gentoo package operation can succeed and produce usable software.
Source build environment
Records the toolchain, target settings and resources relevant to package compilation.
Build feasibility
Assess target compatibility and practical build capacity without assuming aggressive compiler settings are appropriate.
- Which compiler, CHOST and effective build flags apply to the selected package and intended execution target? definition
- What measured memory, free build-space and concurrency constraints determine whether this build is feasible? measurement
- Which build logs and package-specific instructions support diagnosing a failed compilation? provenance
Binary package suitability
Records artifact origin and compatibility checks before binary-package installation.
Artifact provenance and fit
Relate binary-package metadata and verification evidence to the target installation and acquisition policy.
- Who supplied the binary package, and what available integrity or signature evidence has been verified? provenance
- Do the artifact's architecture, ABI, USE configuration and dependency requirements fit the target installation? boundary
- If no suitable binary is available, does the configured policy allow a source build or require the operation to stop? action
Maintenance, security and recovery Turns Gentoo update evidence into bounded maintenance actions and records their completion.
Successful package installation alone does not establish that configuration transitions, security remediation or boot recovery are complete.
Update and transition readiness
Assesses repository freshness, applicable Gentoo news and unfinished package or configuration transitions.
Maintenance obligations
Track instructions and pending work that affect whether an update is ready or complete.
- Which applicable Gentoo news items or profile-transition instructions must be satisfied before the planned update? action
- Which protected configuration files, preserved-library rebuilds or interrupted package operations remain unresolved? measurement
- What evidence will demonstrate that the package transaction and its required follow-up steps completed successfully? action
Security and boot recovery
Relates installed versions to security information and preserves a usable recovery route for system changes.
Remediation and recovery evidence
Record advisory applicability, remedial actions and recovery dependencies for the installation's kernel and boot arrangement.
- Which Gentoo Linux Security Advisories apply to installed versions and configurations, and what exposure remains uncertain? provenance
- Which package updates, rebuilds, service restarts or reboots are required to complete the identified remediation? action
- Before changing the kernel or boot-related packages, which known-working kernel, initramfs where required, boot entry and rescue access are available? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- The supplied PHY.OBJ domain merits review: Gentoo Linux denotes a software distribution, not a physical device.
- The listed kinds are overlapping installation choices, not mutually exclusive editions.
- No universal hardware capacity, installation size or build-time range is meaningful without specifying architecture, package selection and build configuration.
- Which of these check these first hold for the sense of Gentoo Linux this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Gentoo installations using glibc
- Gentoo installations using musl
- Gentoo installations using OpenRC
- Gentoo installations using systemd
- Which of these kinds and varieties hold for the sense of Gentoo Linux this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- os-release operating system identifier - ID=gentoo - Identifies the distribution rather than a particular machine or installed package set.
- Gentoo package atom - category/package - Portage package references can additionally specify versions, slots, repositories and USE dependencies.
- Which of these identifiers and schemes hold for the sense of Gentoo Linux this model covers, and on what evidence? provenance
Standards and regulation
Recalled without web access and unsourced; every item is a lead to verify.
- Gentoo Package Manager Specification, maintained by the Gentoo project, defines package-manager behavior and ebuild interfaces.
- GNU General Public License version 2, published by the Free Software Foundation, governs the Linux kernel; other included packages have their own licenses.
- Which of these standards and regulation hold for the sense of Gentoo Linux this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Customized desktop and server operating systems.
- Software development and testing with selectable compiler and dependency configurations.
- Systems requiring explicit control over optional software features.
- Learning Linux installation, compilation and system administration.
- Which of these real-world use hold for the sense of Gentoo Linux this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Package builds can fail because of unsupported compiler options, missing dependencies or incompatible configurations.
- Dependency conflicts and incompatible USE flag selections can obstruct upgrades.
- Incorrect bootloader, kernel or init-system configuration can prevent booting.
- Source compilation can consume substantial processor time, memory and temporary storage.
- Delayed security updates or exposed services with unsafe configurations can leave systems vulnerable.
- Which of these failure modes and hazards hold for the sense of Gentoo Linux this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Linux - Linux is the kernel; Gentoo Linux combines that kernel with package management, user-space software and distribution policies.
- Portage - Portage is Gentoo's package management system, not the complete operating-system distribution.
- Gentoo Prefix - Gentoo Prefix installs Gentoo-managed software beneath a chosen directory on an existing operating system rather than necessarily providing a complete Gentoo Linux installation.
- Arch Linux - Arch primarily distributes prebuilt packages through pacman; Gentoo centers customization on Portage ebuilds and USE flags while also supporting binary packages.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of Gentoo Linux this model covers, and on what evidence? provenance
What the second pass must settle
- Does the existing Vercy catalogue already contain an authoritative Gentoo or Linux-distribution model that this registry entry should reference or specialise?
- Should the registry's PHY / PHY.OBJ classification remain authoritative for this software distribution, or be reviewed separately without changing this entry's identity?
- Which currently supported profiles, architectures and installation contexts should the researched model explicitly cover?
- What are the current authoritative rules for Gentoo binary-package compatibility and verification across official and third-party providers?
- What coverage limits apply to Gentoo security advisories and assessment tools for additional repositories, local ebuilds and unusual package configurations?