* Add a script to retrieve licenses of the current derivation and of all

its dependencies.  To make it works, you need to change the default
  stdenv as documented in the error message.

	./maintainers/scripts/dep-licenses.sh <attribute name>

svn path=/nixpkgs/trunk/; revision=18508
This commit is contained in:
Nicolas Pierron 2009-11-21 17:50:00 +00:00
parent 86f8f47d87
commit 00efa9c2dd
2 changed files with 82 additions and 0 deletions

View File

@ -0,0 +1,57 @@
#!/bin/sh
attr=$1
: ${NIXPKGS=/etc/nixos/nixpkgs}
tmp=$(mktemp --tmpdir -d nixpkgs-dep-license.XXXXXX)
exitHandler() {
exitCode=$?
rm -rf "$tmp"
exit $exitCode
}
trap "exitHandler" EXIT
# fetch the trace and the drvPath of the attribute.
nix-instantiate $NIXPKGS -A $attr --show-trace > "$tmp/drvPath" 2> "$tmp/trace" || {
cat 1>&2 - "$tmp/trace" <<EOF
An error occured while evaluating $attr.
EOF
exit 1
}
# generate a sed script based on the trace output.
sed '
\,@:.*:@, {
# \1 *.drv file
# \2 License terms
s,.*@:drv:\(.*\):\(.*\):@.*,s!\1!\1: \2!; t;,
s!Str(\\\"\([^,]*\)\\\",\[\])!\1!g
b
}
d
' "$tmp/trace" > "$tmp/filter.sed"
if test $(wc -l "$tmp/filter.sed" | sed 's/ .*//') == 0; then
echo 1>&2 "
No derivation mentionned in the stack trace. Either your derivation does
not use stdenv.mkDerivation or you forgot to use the stdenv adapter named
traceDrvLicenses.
- defaultStdenv = allStdenvs.stdenv;
+ defaultStdenv = traceDrvLicenses allStdenvs.stdenv;
"
exit 1
fi
# remove all dependencies which are using stdenv.mkDerivation
echo '
d
' >> "$tmp/filter.sed"
nix-store -q --tree $(cat "$tmp/drvPath") | sed -f "$tmp/filter.sed"
exit 0;

View File

@ -202,4 +202,29 @@ rec {
(stdenv.mkDerivation args)
{ meta.maintainers = maintainers; };
};
/* Use the trace output to report all processed derivations with their
license name.
*/
traceDrvLicenses = stdenv: stdenv //
{ mkDerivation = args:
let
pkg = stdenv.mkDerivation args;
printDrvPath = val: let
drvPath = builtins.unsafeDiscardStringContext pkg.drvPath;
license =
if pkg ? meta && pkg.meta ? license then
pkg.meta.license
else
null;
in
builtins.trace "@:drv:${toString drvPath}:${builtins.exprToString license}:@"
val;
in pkg // {
outPath = printDrvPath pkg.outPath;
drvPath = printDrvPath pkg.drvPath;
};
};
}