-Package: libyaz-dev
-Depends: libyaz (= ${Source-Version}), libxml2-dev, libwrap0-dev, libssl-dev
-Replaces: yaz-devel
-Conflicts: yaz-devel
-Section: devel
+Package: libyaz4-dev
+Depends: libyaz4 (= ${Source-Version}),
+ libxslt1-dev,
+ libicu36-dev|libicu-dev,
+ tcl8.3|tclsh
+Provides: libyaz-dev
+Replaces: libyaz-dev
+Conflicts: libyaz2-dev, libyaz3-dev, libyaz-dev
+Section: libdevel
+Architecture: any
+Suggests: yaz-doc
+Description: development files for the Z39.50 toolkit
+ YAZ is a toolkit that allows you to develop software using the
+ ANSI Z39.50/ISO23950 standard for information retrieval.
+ .
+ This package includes development libraries and C/C++ header files.
+
+Package: yaz-illclient
+Section: utils
+Depends: ${shlibs:Depends}
+Architecture: any
+Description: ILL utility for the Z39.50 toolkit
+ YAZ is a toolkit that allows you to develop software using the
+ ANSI Z39.50/ISO23950 standard for information retrieval.
+ .
+ This package includes the yaz-illclient program which sends ILL
+ (Inter-Library-Loan) requests to a server and decodes the response.
+
+Package: yaz-icu
+Section: utils
+Depends: ${shlibs:Depends}