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buildPerlPackage: don't mess with pname and phase out use of name

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Currently `buildPerlPackage` prefixes the Perl version to the package's
`pname`, which results in `nix run` not being able to work for any
packages build with it out of the box. This commit corrects that and
phases out the ability to set `name` directly, as well as refactors the
code to not require `cleanedAttrs`.
This commit is contained in:
Malo Bourgon 2022-06-07 11:03:48 -07:00
parent 61beb33b83
commit 399732b449
2 changed files with 21 additions and 27 deletions
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26
doc/languages-frameworks/perl.section.md
View File

@ -1,6 +1,6 @@
# Perl {#sec-language-perl}
## Running perl programs on the shell {#ssec-perl-running}
## Running Perl programs on the shell {#ssec-perl-running}
When executing a Perl script, it is possible you get an error such as `./myscript.pl: bad interpreter: /usr/bin/perl: no such file or directory`. This happens when the script expects Perl to be installed at `/usr/bin/perl`, which is not the case when using Perl from nixpkgs. You can fix the script by changing the first line to:
@ -35,15 +35,16 @@ Perl packages from CPAN are defined in [pkgs/top-level/perl-packages.nix](https:
```nix
ClassC3 = buildPerlPackage rec {
name = "Class-C3-0.21";
pname = "Class-C3";
version = "0.21";
src = fetchurl {
url = "mirror://cpan/authors/id/F/FL/FLORA/${name}.tar.gz";
url = "mirror://cpan/authors/id/F/FL/FLORA/${pname}-${version}.tar.gz";
sha256 = "1bl8z095y4js66pwxnm7s853pi9czala4sqc743fdlnk27kq94gz";
};
};
```
Note the use of `mirror://cpan/`, and the `${name}` in the URL definition to ensure that the name attribute is consistent with the source that we’re actually downloading. Perl packages are made available in `all-packages.nix` through the variable `perlPackages`. For instance, if you have a package that needs `ClassC3`, you would typically write
Note the use of `mirror://cpan/`, and the `pname` and `version` in the URL definition to ensure that the `pname` attribute is consistent with the source that we’re actually downloading. Perl packages are made available in `all-packages.nix` through the variable `perlPackages`. For instance, if you have a package that needs `ClassC3`, you would typically write
```nix
foo = import ../path/to/foo.nix {
@ -72,10 +73,11 @@ So what does `buildPerlPackage` do? It does the following:
{ buildPerlPackage, fetchurl, db }:
buildPerlPackage rec {
name = "BerkeleyDB-0.36";
pname = "BerkeleyDB";
version = "0.36";
src = fetchurl {
url = "mirror://cpan/authors/id/P/PM/PMQS/${name}.tar.gz";
url = "mirror://cpan/authors/id/P/PM/PMQS/${pname}-${version}.tar.gz";
sha256 = "07xf50riarb60l1h6m2dqmql8q5dij619712fsgw7ach04d8g3z1";
};
@ -90,9 +92,10 @@ Dependencies on other Perl packages can be specified in the `buildInputs` and `p
```nix
ClassC3Componentised = buildPerlPackage rec {
name = "Class-C3-Componentised-1.0004";
pname = "Class-C3-Componentised";
version = "1.0004";
src = fetchurl {
url = "mirror://cpan/authors/id/A/AS/ASH/${name}.tar.gz";
url = "mirror://cpan/authors/id/A/AS/ASH/${pname}-${version}.tar.gz";
sha256 = "0xql73jkcdbq4q9m0b0rnca6nrlvf5hyzy8is0crdk65bynvs8q1";
};
propagatedBuildInputs = [
@ -111,7 +114,7 @@ ImageExifTool = buildPerlPackage {
version = "11.50";
src = fetchurl {
url = "https://www.sno.phy.queensu.ca/~phil/exiftool/Image-ExifTool-11.50.tar.gz";
url = "https://www.sno.phy.queensu.ca/~phil/exiftool/${pname}-${version}.tar.gz";
sha256 = "0d8v48y94z8maxkmw1rv7v9m0jg2dc8xbp581njb6yhr7abwqdv3";
};
@ -139,9 +142,10 @@ This program takes a Perl module name, looks it up on CPAN, fetches and unpacks
```ShellSession
$ nix-generate-from-cpan XML::Simple
XMLSimple = buildPerlPackage rec {
name = "XML-Simple-2.22";
pname = "XML-Simple";
version = "2.22";
src = fetchurl {
url = "mirror://cpan/authors/id/G/GR/GRANTM/${name}.tar.gz";
url = "mirror://cpan/authors/id/G/GR/GRANTM/XML-Simple-2.22.tar.gz";
sha256 = "b9450ef22ea9644ae5d6ada086dc4300fa105be050a2030ebd4efd28c198eb49";
};
propagatedBuildInputs = [ XMLNamespaceSupport XMLSAX XMLSAXExpat ];

22
pkgs/development/perl-modules/generic/default.nix
View File

@ -27,26 +27,16 @@
, ...
}@attrs:
assert attrs?pname -> attrs?version;
assert attrs?pname -> !(attrs?name);
lib.warnIf (attrs ? name) "builtPerlPackage: `name' (\"${attrs.name}\") is deprecated, use `pname' and `version' instead"
lib.throwIf (attrs ? name) "buildPerlPackage: `name` (\"${attrs.name}\") is deprecated, use `pname` and `version` instead"
(let
defaultMeta = {
homepage = "https://metacpan.org/release/${lib.getName attrs}"; # TODO: phase-out `attrs.name`
platforms = perl.meta.platforms;
homepage = "https://metacpan.org/dist/${attrs.pname}";
inherit (perl.meta) platforms;
};
cleanedAttrs = builtins.removeAttrs attrs [
"meta" "builder" "version" "pname" "fullperl"
"buildInputs" "nativeBuildInputs" "buildInputs"
"PERL_AUTOINSTALL" "AUTOMATED_TESTING" "PERL_USE_UNSAFE_INC"
];
package = stdenv.mkDerivation ({
pname = "perl${perl.version}-${lib.getName attrs}"; # TODO: phase-out `attrs.name`
version = lib.getVersion attrs; # TODO: phase-out `attrs.name`
package = stdenv.mkDerivation (attrs // {
name = "perl${perl.version}-${attrs.pname}-${attrs.version}";
builder = ./builder.sh;
@ -59,6 +49,6 @@ lib.warnIf (attrs ? name) "builtPerlPackage: `name' (\"${attrs.name}\") is depre
inherit PERL_AUTOINSTALL AUTOMATED_TESTING PERL_USE_UNSAFE_INC;
meta = defaultMeta // (attrs.meta or { });
} // cleanedAttrs);
});
in toPerlModule package)