package-query mismatches libalpm.so version:
ldd `which package-query`

        linux-vdso.so.1 (0x000003ff94de2000)
        libcurl.so.4 => /usr/lib/libcurl.so.4 (0x000003c91915a000)
        libyajl.so.2 => /usr/lib/libyajl.so.2 (0x000003c918f50000)
        libalpm.so.9 => not found
        libc.so.6 => /usr/lib/libc.so.6 (0x000003c918bac000)
        libidn.so.11 => /usr/lib/libidn.so.11 (0x000003c918978000)
        libssh2.so.1 => /usr/lib/libssh2.so.1 (0x000003c91874c000)
        libssl.so.1.0.0 => /usr/lib/libssl.so.1.0.0 (0x000003c9184d1000)
        libcrypto.so.1.0.0 => /usr/lib/libcrypto.so.1.0.0 (0x000003c918059000)
        libgssapi_krb5.so.2 => /usr/lib/libgssapi_krb5.so.2 (0x000003c917e0c000)
        libkrb5.so.3 => /usr/lib/libkrb5.so.3 (0x000003c917b27000)
        libk5crypto.so.3 => /usr/lib/libk5crypto.so.3 (0x000003c9178f6000)
        libcom_err.so.2 => /usr/lib/libcom_err.so.2 (0x000003c9176f2000)
        libz.so.1 => /usr/lib/libz.so.1 (0x000003c9174dc000)
        libpthread.so.0 => /usr/lib/libpthread.so.0 (0x000003c9172bf000)
        /lib64/ld-linux-x86-64.so.2 (0x000003c9193ce000)
        libdl.so.2 => /usr/lib/libdl.so.2 (0x000003c9170bb000)
        libkrb5support.so.0 => /usr/lib/libkrb5support.so.0 (0x000003c916eae000)
        libkeyutils.so.1 => /usr/lib/libkeyutils.so.1 (0x000003c916caa000)
        libresolv.so.2 => /usr/lib/libresolv.so.2 (0x000003c916a93000)

/usr/bin/package-query принадлежит package-query 1.7-2

pacman /usr/lib/libalpm.so
pacman /usr/lib/libalpm.so.10
pacman /usr/lib/libalpm.so.10.0.0