tvl-depot/src/libstore/derivations-ast.def

init initDerivationsHelpers

Derive | ATermList ATermList ATermList string string ATermList ATermList | ATerm |

| string string | ATerm | EnvBinding |
| string ATermList | ATerm | DerivationInput |
| string string string string | ATerm | DerivationOutput |
* Renamed `normalise.cc' -> `build.cc', `storeexprs.cc' -> `derivations.cc', etc. * Store the SHA-256 content hash of store paths in the database after they have been built/added. This is so that we can check whether the store has been messed with (a la `rpm --verify'). * When registering path validity, verify that the closure property holds. 2005-01-19 17:39:47 +01:00			`init initDerivationsHelpers`
* Drop ATmake / ATMatcher also in handling store expressions. 2004-10-29 13:22:49 +02:00
* Started removing closure store expressions, i.e., the explicit representation of closures as ATerms in the Nix store. Instead, the file system pointer graph is now stored in the Nix database. This has many advantages: - It greatly simplifies the implementation (we can drop the notion of `successors', and so on). - It makes registering roots for the garbage collector much easier. Instead of specifying the closure expression as a root, you can simply specify the store path that must be retained as a root. This could not be done previously, since there was no way to find the closure store expression containing a given store path. - Better traceability: it is now possible to query what paths are referenced by a path, and what paths refer to a path. 2005-01-19 12:16:11 +01:00			`Derive \| ATermList ATermList ATermList string string ATermList ATermList \| ATerm \|`
* Drop ATmake / ATMatcher also in handling store expressions. 2004-10-29 13:22:49 +02:00
			`\| string string \| ATerm \| EnvBinding \|`
* Another change to low-level derivations. The last one this year, I promise :-) This allows derivations to specify on what output paths of input derivations they are dependent. This helps to prevent unnecessary downloads. For instance, a build might be dependent on the `devel' and `lib' outputs of some library component, but not the `docs' output. 2005-01-20 15:10:19 +01:00			`\| string ATermList \| ATerm \| DerivationInput \|`
* Removed the `id' attribute hack. * Formalise the notion of fixed-output derivations, i.e., derivations for which a cryptographic hash of the output is known in advance. Changes to such derivations should not propagate upwards through the dependency graph. Previously this was done by specifying the hash component of the output path through the `id' attribute, but this is insecure since you can lie about it (i.e., you can specify any hash and then produce a completely different output). Now the responsibility for checking the output is moved from the builder to Nix itself. A fixed-output derivation can be created by specifying the `outputHash' and `outputHashAlgo' attributes, the latter taking values `md5', `sha1', and `sha256', and the former specifying the actual hash in hexadecimal or in base-32 (auto-detected by looking at the length of the attribute value). MD5 is included for compatibility but should be considered deprecated. * Removed the `drvPath' pseudo-attribute in derivation results. It's no longer necessary. * Cleaned up the support for multiple output paths in derivation store expressions. Each output now has a unique identifier (e.g., `out', `devel', `docs'). Previously there was no way to tell output paths apart at the store expression level. * `nix-hash' now has a flag `--base32' to specify that the hash should be printed in base-32 notation. * `fetchurl' accepts parameters `sha256' and `sha1' in addition to `md5'. * `nix-prefetch-url' now prints out a SHA-1 hash in base-32. (TODO: a flag to specify the hash.) 2005-01-17 17:55:19 +01:00			`\| string string string string \| ATerm \| DerivationOutput \|`