fails to locate curl:ver<4>:from<native> on Android

[stuart-little]

Context

I am on Android 10, running raku and zef in the terminal emulator Termux.

Trying to install LibCurl errors out by failing to locate my curl installation:

$ zef install LibCurl
===> Searching for: LibCurl
===> Searching for missing dependencies: NativeLibs:ver<0.0.7+>:auth<github:salortiz>, curl:ver<4>:from<native>, Test::When
===> Failed to find dependencies: curl:ver<4>:from<native>
Failed to resolve some missing dependencies

I do have curl though:

$ curl --version
curl 7.74.0 (aarch64-unknown-linux-android) libcurl/7.74.0 OpenSSL/1.1.1i zlib/1.2.11 libssh2/1.9.0 nghttp2/1.42.0
Release-Date: 2020-12-09
Protocols: dict file ftp ftps gopher http https imap imaps mqtt pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: alt-svc AsynchDNS HTTP2 HTTPS-proxy IPv6 Largefile libz NTLM NTLM_WB SSL UnixSockets

I also have the ancillary library:

$ find $PREFIX/lib/ -name libcurl*
/data/data/com.termux/files/usr/lib/libcurl.a        
/data/data/com.termux/files/usr/lib/pkgconfig/libcurl.pc
/data/data/com.termux/files/usr/lib/libcurl.so
/data/data/com.termux/files/usr/lib/libcurl.la

Expected Behavior

Successful installation of LibCurl.

Actual Behavior

Failed installation, as detailed above.

Steps to Reproduce

$ zef install --debug LibCurl
===> Searching for: LibCurl
===> Found: LibCurl:ver<1.3>:auth<github:CurtTilmes>:api<1> [via Zef::Repository::Ecosystems<p6c>]
===> Dependencies: NativeCall, NativeLibs, JSON::Fast, curl, Test, Test::When                             ===> Searching for missing dependencies: NativeLibs:ver<0.0.7+>:auth<github:salortiz>, curl:ver<4>:from<native>, Test::When
===> Failed to find dependencies: curl:ver<4>:from<native>
Failed to resolve some missing dependencies

Your Environment

• raku -v

Welcome to Rakudo(tm) v2020.12-9-g4b6b2e070.         Implementing the Raku(tm) programming language v6.d. Built on MoarVM version 2020.12.

• zef list --installed

Cache::LRU:ver<0.1.0>
Digest::SHA256::Native:ver<0.03>
Distribution::Builder::MakeFromJSON:ver<0.6>:auth<github:niner>
File::Directory::Tree:auth<labster>
File::Find:ver<0.1>
File::Temp:ver<0.0.8>
File::Which:ver<1.0.1>
HTTP::Tiny:ver<0.1.5>:auth<cpan:JJATRIA>
Hash::LRU:ver<0.0.4>:auth<cpan:ELIZABETH>
IO::Socket::SSL:ver<0.0.2>:auth<github:sergot>
Inline::Perl5:ver<0.50>:auth<github:niner>
JSON::Class:ver<0.0.15>:auth<github:jonathanstowe>:api<1.0>
JSON::Fast:ver<0.15>
JSON::Marshal:ver<0.0.19>:auth<github:jonathanstowe>:api<1.0>
JSON::Name:ver<0.0.4>:auth<github:jonathanstowe>:api<1.0>
JSON::Unmarshal:ver<0.08>
LZW::Revolunet:ver<0.1.2>
LibraryCheck:ver<0.0.9>:auth<github:jonathanstowe>:api<1.0>
LibraryMake:ver<1.0.0>:auth<github:retupmoca>
META6:ver<0.0.24>:auth<github:jonathanstowe>:api<1.0>
OpenSSL:ver<0.1.23>:auth<github:sergot>
Readline:ver<0.1.6>:auth<cpan:fooist>
Shell::Command
System::Query:ver<0.1.4>:auth<github:tony-o>
URI:ver<0.3.0>
zef:ver<0.9.1>:auth<github:ugexe>:api<0>
zef:ver<0.9.2>:auth<github:ugexe>:api<0>
zef:ver<0.9.4>:auth<github:ugexe>:api<0>
CORE:ver<6.d>:auth<perl>

---

Additional comments

I have also reported this in the LibCurl repo, but I am not sure it belongs there. It seems to me this might be a more general issue with how zef searches for native deps in quirky environments like Termux.

[niner]

I also have the ancillary library: $ find $PREFIX/lib/ -name libcurl* /data/data/com.termux/files/usr/lib/libcurl.a /data/data/com.termux/files/usr/lib/pkgconfig/libcurl.pc /data/data/com.termux/files/usr/lib/libcurl.so /data/data/com.termux/files/usr/lib/libcurl.la

But you don't seem to have a libcurl.so.4 which is what we're looking for with a dependency of curl:ver<4>:from<native>

[stuart-little]

You are right @niner. Thank you!

$ ln -s /data/data/com.termux/files/usr/lib/libcurl.so /data/data/com.termux/files/usr/lib/libcurl.so.4

Before installing did the trick (well, NativeLibs failed its tests, but those can be forced).