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32 lines
2.1 KiB
Org Mode
32 lines
2.1 KiB
Org Mode
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:PROPERTIES:
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:ID: 11ad06b1-c3ad-4675-9fc0-f651bd62a6d7
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:ROAM_REFS: [cite:@courtesCodeStagingGNU2017]
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:END:
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#+title: Code Staging in GNU Guix
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#+date: 2022-06-11 17:36:08 +08:00
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#+date_modified: 2022-06-11 18:10:24 +08:00>
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#+published: 2017-10-23
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#+author: Courtès, L.
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#+source: https://hal.inria.fr/hal-01580582
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#+language: en
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- describes the code staging process for package definitions in [[id:be917383-84c4-4bf5-9ca0-b04bfb778f4f][Guix package manager]];
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mainly describing [[roam:Guix G-expressions]]
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- creating package definitions often certain parts of the definitions to carry through the build stage;
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oftentimes, these parts of code include additional build instructions for non-trivial packages and additional inputs for that package
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- while S-expressions (sexp) are nice, they can be verbose at times;
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this is where G-expressions (gexp) comes in handy
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- gexp are hygenic — they preserve lexical scope across different stages
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- they can easily refer to the high-level objects (e.g., packages, local file) in the store (i.e., ~/gnu/store~)
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- first-class Scheme values
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- binds deployment to staging — when brought into staging, all inputs are also deployed as well
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- use cases for gexps
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- code sharing between multiple stages;
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this is mostly present such as defining packages and building them
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- cross-compilation — there are additional operators to denote "nativeness" where it will refer to the "native" version rather than the target version
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- package definitions — less verbose definitions which is always nice especially with the use of referring to the absolute file names from the store
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- system services — the process and lifecycle of system services is similar to defining packages being composed of multiple stages: one in definition and one in building the services in the init system
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- system tests — they can be defined through the =operating-system= interface which are derivations describing entire operating systems;
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in Guix, this is implemented through a tool called =marionette= which introduces another stage in the pipeline
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