![]() ![]() The current development strategy focuses on implementing optimizations and adding new features, while maintaining the same repository format.ĭarcs has been criticized on the grounds of performance. #Cvs haskell Patch#Darcs 2.0 was released in April 2008 and introduced a more robust repository format, as well as a new patch semantic called "darcs-2", aimed at minimizing exponential merge conflicts. After writing an initial version of Darcs in C++, the Haskell version was written in Autumn 2002 and released to the public in April 2003. These discussions didn't lead to any code being committed to Arch, but did lead to the conception of the theory of patches. Since version 2.10, Darcs uses patience diff by default.ĭarcs evolved out of David Roundy's efforts to design a new patch format for GNU arch in June 2002. To address cases when this is not desirable, Darcs enables the user to specify explicit dependencies between patches. This means that patches that modify different parts of the code are considered, by default, independent. Intuitively, a patch B depends on another patch A if A provides the content that B modifies. The notion of dependency between patches is defined syntactically. word substitution (typically used in code refactoring, for instance rename all occurrences of "foo" to "bar" in a given file).file and directory creation and deletion,.These calculations implement a so-called "patch theory".Ī Darcs patch can contain changes of the following kinds: #Cvs haskell how to#Darcs automatically calculates whether patches can be reordered (an operation called commutation), and how to do it. The patches of a repository are linearly ordered. These commands are more interactive: one can choose more precisely which patches they want to exchange with remote repositories. In terms of user interface, this means that Darcs has fewer commands. ![]() ![]() Many branching, merging, and cherry-picking operations that would require additional commands with snapshot-based systems like Git or Mercurial can be directly done with Darcs with the usual "pull" and "push" commands. In many cases patches can be independently transmitted between various repositories. the set of patches is only a partially ordered set. For the user, a repository can be seen as a set of patches, where each patch is not necessarily ordered with respect to other patches, i.e. Darcs treats patches as first-class citizens. ![]()
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