forked from mirrors/nixpkgs
152c63c9ff
This does break the API of being able to import any lib file and get its libs, however I'm not sure people did this. I made this while exploring being able to swap out docFn with a stub in #2305, to avoid functor performance problems. I don't know if that is going to move forward (or if it is a problem or not,) but after doing all this work figured I'd put it up anyway :) Two notable advantages to this approach: 1. when a lib inherits another lib's functions, it doesn't automatically get put in to the scope of lib 2. when a lib implements a new obscure functions, it doesn't automatically get put in to the scope of lib Using the test script (later in this commit) I got the following diff on the API: + diff master fixed-lib 11764a11765,11766 > .types.defaultFunctor > .types.defaultTypeMerge 11774a11777,11778 > .types.isOptionType > .types.isType 11781a11786 > .types.mkOptionType 11788a11794 > .types.setType 11795a11802 > .types.types This means that this commit _adds_ to the API, however I can't find a way to fix these last remaining discrepancies. At least none are _removed_. Test script (run with nix-repl in the PATH): #!/bin/sh set -eux repl() { suff=${1:-} echo "(import ./lib)$suff" \ | nix-repl 2>&1 } attrs_to_check() { repl "${1:-}" \ | tr ';' $'\n' \ | grep "\.\.\." \ | cut -d' ' -f2 \ | sed -e "s/^/${1:-}./" \ | sort } summ() { repl "${1:-}" \ | tr ' ' $'\n' \ | sort \ | uniq } deep_summ() { suff="${1:-}" depth="${2:-4}" depth=$((depth - 1)) summ "$suff" for attr in $(attrs_to_check "$suff" | grep -v "types.types"); do if [ $depth -eq 0 ]; then summ "$attr" | sed -e "s/^/$attr./" else deep_summ "$attr" "$depth" | sed -e "s/^/$attr./" fi done } ( cd nixpkgs #git add . #git commit -m "Auto-commit, sorry" || true git checkout fixed-lib deep_summ > ../fixed-lib git checkout master deep_summ > ../master ) if diff master fixed-lib; then echo "SHALLOW MATCH!" fi ( cd nixpkgs git checkout fixed-lib repl .types )
71 lines
1.8 KiB
Nix
71 lines
1.8 KiB
Nix
/* Some functions for manipulating meta attributes, as well as the
|
|
name attribute. */
|
|
|
|
{ lib }:
|
|
|
|
rec {
|
|
|
|
|
|
/* Add to or override the meta attributes of the given
|
|
derivation.
|
|
|
|
Example:
|
|
addMetaAttrs {description = "Bla blah";} somePkg
|
|
*/
|
|
addMetaAttrs = newAttrs: drv:
|
|
drv // { meta = (drv.meta or {}) // newAttrs; };
|
|
|
|
|
|
/* Disable Hydra builds of given derivation.
|
|
*/
|
|
dontDistribute = drv: addMetaAttrs { hydraPlatforms = []; } drv;
|
|
|
|
|
|
/* Change the symbolic name of a package for presentation purposes
|
|
(i.e., so that nix-env users can tell them apart).
|
|
*/
|
|
setName = name: drv: drv // {inherit name;};
|
|
|
|
|
|
/* Like `setName', but takes the previous name as an argument.
|
|
|
|
Example:
|
|
updateName (oldName: oldName + "-experimental") somePkg
|
|
*/
|
|
updateName = updater: drv: drv // {name = updater (drv.name);};
|
|
|
|
|
|
/* Append a suffix to the name of a package (before the version
|
|
part). */
|
|
appendToName = suffix: updateName (name:
|
|
let x = builtins.parseDrvName name; in "${x.name}-${suffix}-${x.version}");
|
|
|
|
|
|
/* Apply a function to each derivation and only to derivations in an attrset
|
|
*/
|
|
mapDerivationAttrset = f: set: lib.mapAttrs (name: pkg: if lib.isDerivation pkg then (f pkg) else pkg) set;
|
|
|
|
|
|
/* Decrease the nix-env priority of the package, i.e., other
|
|
versions/variants of the package will be preferred.
|
|
*/
|
|
lowPrio = drv: addMetaAttrs { priority = 10; } drv;
|
|
|
|
|
|
/* Apply lowPrio to an attrset with derivations
|
|
*/
|
|
lowPrioSet = set: mapDerivationAttrset lowPrio set;
|
|
|
|
|
|
/* Increase the nix-env priority of the package, i.e., this
|
|
version/variant of the package will be preferred.
|
|
*/
|
|
hiPrio = drv: addMetaAttrs { priority = -10; } drv;
|
|
|
|
|
|
/* Apply hiPrio to an attrset with derivations
|
|
*/
|
|
hiPrioSet = set: mapDerivationAttrset hiPrio set;
|
|
|
|
}
|