Example error:
$ apt-cyg install poppler Installing poppler --2024-02-18 11:42:34-- https://mirrors.163.com/cygwin//x86_64/release/poppler/poppler-21.01.0-1.tar.xz Resolving mirrors.163.com (mirrors.163.com)... 60.191.80.15 Connecting to mirrors.163.com (mirrors.163.com)|60.191.80.15|:443... connected. GnuTLS: The request is invalid. Unable to establish SSL connection. poppler-21.01.0-1.tar.xz: FAILED sha512sum: WARNING: 1 computed checksum did NOT match
Fix:
Step 1: change mirror site to http eg http://cygwin.mirror.constant.com/
$ apt-cyg mirror "http://cygwin.mirror.constant.com/" Mirror set to http://cygwin.mirror.constant.com/.
Or
$ apt-cyg --mirror "http://cygwin.mirror.constant.com/" install gnutls --2024-02-18 12:01:13-- http://cygwin.mirror.constant.com//x86_64/setup.bz2 Resolving cygwin.mirror.constant.com (cygwin.mirror.constant.com)... 108.61.5.83 Connecting to cygwin.mirror.constant.com (cygwin.mirror.constant.com)|108.61.5.83|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 4348579 (4.1M) [application/octet-stream] Saving to: ‘setup.bz2’ setup.bz2 100%[===================>] 4.15M 108KB/s in 34s 2024-02-18 12:01:49 (123 KB/s) - ‘setup.bz2’ saved [4348579/4348579] Updated setup.ini Installing --mirror Unable to locate package --mirror
Step 2: now you can install package with apt-cyg
$ apt-cyg install gnutls Installing gnutls --2024-02-18 12:02:55-- http://cygwin.mirror.constant.com//x86_64/release/gnutls/gnutls-3.6.9-1.tar.xz Resolving cygwin.mirror.constant.com (cygwin.mirror.constant.com)... 108.61.5.83 Connecting to cygwin.mirror.constant.com (cygwin.mirror.constant.com)|108.61.5.83|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 740112 (723K) [application/octet-stream] Saving to: ‘gnutls-3.6.9-1.tar.xz’ gnutls-3.6.9-1.tar. 100%[===================>] 722.77K 128KB/s in 9.8s 2024-02-18 12:03:05 (73.6 KB/s) - ‘gnutls-3.6.9-1.tar.xz’ saved [740112/740112] gnutls-3.6.9-1.tar.xz: OK Unpacking... Package gnutls installed
