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diff --git a/doc/manual/glossary/glossary.xml b/doc/manual/glossary/glossary.xml deleted file mode 100644 index e3162ed8d..000000000 --- a/doc/manual/glossary/glossary.xml +++ /dev/null @@ -1,199 +0,0 @@ -<appendix xmlns="http://docbook.org/ns/docbook" - xmlns:xlink="http://www.w3.org/1999/xlink" - xml:id="part-glossary"> - -<title>Glossary</title> - - -<glosslist> - - -<glossentry xml:id="gloss-derivation"><glossterm>derivation</glossterm> - - <glossdef><para>A description of a build action. The result of a - derivation is a store object. Derivations are typically specified - in Nix expressions using the <link - linkend="ssec-derivation"><function>derivation</function> - primitive</link>. These are translated into low-level - <emphasis>store derivations</emphasis> (implicitly by - <command>nix-env</command> and <command>nix-build</command>, or - explicitly by <command>nix-instantiate</command>).</para></glossdef> - -</glossentry> - - -<glossentry><glossterm>store</glossterm> - - <glossdef><para>The location in the file system where store objects - live. Typically <filename>/nix/store</filename>.</para></glossdef> - -</glossentry> - - -<glossentry><glossterm>store path</glossterm> - - <glossdef><para>The location in the file system of a store object, - i.e., an immediate child of the Nix store - directory.</para></glossdef> - -</glossentry> - - -<glossentry><glossterm>store object</glossterm> - - <glossdef><para>A file that is an immediate child of the Nix store - directory. These can be regular files, but also entire directory - trees. Store objects can be sources (objects copied from outside of - the store), derivation outputs (objects produced by running a build - action), or derivations (files describing a build - action).</para></glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-substitute"><glossterm>substitute</glossterm> - - <glossdef><para>A substitute is a command invocation stored in the - Nix database that describes how to build a store object, bypassing - the normal build mechanism (i.e., derivations). Typically, the - substitute builds the store object by downloading a pre-built - version of the store object from some server.</para></glossdef> - -</glossentry> - - -<glossentry><glossterm>purity</glossterm> - - <glossdef><para>The assumption that equal Nix derivations when run - always produce the same output. This cannot be guaranteed in - general (e.g., a builder can rely on external inputs such as the - network or the system time) but the Nix model assumes - it.</para></glossdef> - -</glossentry> - - -<glossentry><glossterm>Nix expression</glossterm> - - <glossdef><para>A high-level description of software packages and - compositions thereof. Deploying software using Nix entails writing - Nix expressions for your packages. Nix expressions are translated - to derivations that are stored in the Nix store. These derivations - can then be built.</para></glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-reference"><glossterm>reference</glossterm> - - <glossdef> - <para>A store path <varname>P</varname> is said to have a - reference to a store path <varname>Q</varname> if the store object - at <varname>P</varname> contains the path <varname>Q</varname> - somewhere. The <emphasis>references</emphasis> of a store path are - the set of store paths to which it has a reference. - </para> - <para>A derivation can reference other derivations and sources - (but not output paths), whereas an output path only references other - output paths. - </para> - </glossdef> - -</glossentry> - -<glossentry xml:id="gloss-reachable"><glossterm>reachable</glossterm> - - <glossdef><para>A store path <varname>Q</varname> is reachable from - another store path <varname>P</varname> if <varname>Q</varname> is in the - <link linkend="gloss-closure">closure</link> of the - <link linkend="gloss-reference">references</link> relation. - </para></glossdef> -</glossentry> - -<glossentry xml:id="gloss-closure"><glossterm>closure</glossterm> - - <glossdef><para>The closure of a store path is the set of store - paths that are directly or indirectly “reachable” from that store - path; that is, it’s the closure of the path under the <link - linkend="gloss-reference">references</link> relation. For a package, the - closure of its derivation is equivalent to the build-time - dependencies, while the closure of its output path is equivalent to its - runtime dependencies. For correct deployment it is necessary to deploy whole - closures, since otherwise at runtime files could be missing. The command - <command>nix-store -qR</command> prints out closures of store paths. - </para> - <para>As an example, if the store object at path <varname>P</varname> contains - a reference to path <varname>Q</varname>, then <varname>Q</varname> is - in the closure of <varname>P</varname>. Further, if <varname>Q</varname> - references <varname>R</varname> then <varname>R</varname> is also in - the closure of <varname>P</varname>. - </para></glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-output-path"><glossterm>output path</glossterm> - - <glossdef><para>A store path produced by a derivation.</para></glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-deriver"><glossterm>deriver</glossterm> - - <glossdef><para>The deriver of an <link - linkend="gloss-output-path">output path</link> is the store - derivation that built it.</para></glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-validity"><glossterm>validity</glossterm> - - <glossdef><para>A store path is considered - <emphasis>valid</emphasis> if it exists in the file system, is - listed in the Nix database as being valid, and if all paths in its - closure are also valid.</para></glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-user-env"><glossterm>user environment</glossterm> - - <glossdef><para>An automatically generated store object that - consists of a set of symlinks to “active” applications, i.e., other - store paths. These are generated automatically by <link - linkend="sec-nix-env"><command>nix-env</command></link>. See <xref - linkend="sec-profiles" />.</para> - - </glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-profile"><glossterm>profile</glossterm> - - <glossdef><para>A symlink to the current <link - linkend="gloss-user-env">user environment</link> of a user, e.g., - <filename>/nix/var/nix/profiles/default</filename>.</para></glossdef> - -</glossentry> - - -<glossentry xml:id="gloss-nar"><glossterm>NAR</glossterm> - - <glossdef><para>A <emphasis>N</emphasis>ix - <emphasis>AR</emphasis>chive. This is a serialisation of a path in - the Nix store. It can contain regular files, directories and - symbolic links. NARs are generated and unpacked using - <command>nix-store --dump</command> and <command>nix-store - --restore</command>.</para></glossdef> - -</glossentry> - - - -</glosslist> - - -</appendix> |