From b4f88d0ec364f00196127ea29e8db5033368e23a Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Wed, 13 Aug 2003 09:13:52 +0000 Subject: * Split the book.xml into several xml files. --- doc/manual/introduction.xml | 98 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 doc/manual/introduction.xml (limited to 'doc/manual/introduction.xml') diff --git a/doc/manual/introduction.xml b/doc/manual/introduction.xml new file mode 100644 index 000000000000..77a5f917ee71 --- /dev/null +++ b/doc/manual/introduction.xml @@ -0,0 +1,98 @@ + + Introduction + + + The problem space + + + Nix is a system for controlling the automatic creation and distribution + of data, such as computer programs and other software artifacts. This is + a very general problem, and there are many applications that fall under + this description. + + + + Build management + + + Build management tools are used to perform software + builds, that is, the construction of derived products such + as executable programs from source code. A commonly used build tool is + Make, which is a standard tool on Unix systems. These tools have to + deal with several issues: + + + + + + + + + + + + Package management + + + After software has been built, is must also be + deployed in the intended target environment, e.g., + the user's workstation. Examples include the Red Hat package manager + (RPM), Microsoft's MSI, and so on. Here also we have to deal with + several issues: + + + + The creation of packages from some formal + description of what artifacts should be distributed in the + package. + + + + + The deployment of packages, that is, the + mechanism by which we get them onto the intended target + environment. This can be as simple as copying a file, but + complexity comes from the wide range of possible installation + media (such as a network install), and the scalability of the + process (if a program must be installed on a thousand systems, we + do not want to visit each system and perform some manual steps to + install the program on that system; that is, the complexity for + the system administrator should be constant, not linear). + + + + + + + + + + The Nix system + + + ... + + + + Existing tools in this field generally both a underlying model (such as + the derivation graph of build tools, or the versioning scheme that + determines when two packages are compatible in a package + management system) and a formalism that allows ... + + + + Following the principle of separation of mechanism and policy, the Nix + system separates the low-level aspect of file system + object management form the high-level aspect of the + ... + + + + + + + -- cgit 1.4.1