¿Cómo instalar tcltk en R?

Mi sistema es: debian6 + r-2.15.

He instaladotcl-devel ytk-devel conapt-get:

apt-get install tcl8.5-dev tk8.5-dev

Pero me sale el siguiente error

> library("tcltk") 
Error : .onLoad failed in loadNamespace() for 'tcltk', details:
call: fun(libname, pkgname)
error: Tcl/Tk support is not available on this system
In addition: Warning message:
S3 methods ‘$.tclvar’, ‘
> library("tcltk") 
Error : .onLoad failed in loadNamespace() for 'tcltk', details:
call: fun(libname, pkgname)
error: Tcl/Tk support is not available on this system
In addition: Warning message:
S3 methods ‘$.tclvar’, ‘$<-.tclvar’, ‘as.character.tclObj’, ‘as.character.tclVar’,  
‘as.double.tclObj’, ‘as.integer.tclObj’, ‘as.logical.tclObj’, ‘as.raw.tclObj’, 
‘print.tclObj’, ‘[[.tclArray’, ‘[[<-.tclArray’, ‘$.tclArray’, ‘$<-.tclArray’, 
‘names.tclArray’, ‘names<-.tclArray’, ‘length.tclArray’, ‘length<-.tclArray’, 
‘tclObj.tclVar’, ‘tclObj<-.tclVar’, ‘tclvalue.default’, ‘tclvalue.tclObj’,
‘tclvalue.tclVar’, ‘tclvalue<-.default’, ‘tclvalue<-.tclVar’, ‘close.tkProgressBar’ were declared in NAMESPACE but not found 
Error: package/namespace load failed for ‘tcltk’
> install.packages('tcltk')
Warning message:
package ‘tcltk’ is not available (for R version 2.15.1) 
lt;-.tclvar’, ‘as.character.tclObj’, ‘as.character.tclVar’, ‘as.double.tclObj’, ‘as.integer.tclObj’, ‘as.logical.tclObj’, ‘as.raw.tclObj’, ‘print.tclObj’, ‘[[.tclArray’, ‘[[<-.tclArray’, ‘$.tclArray’, ‘
> library("tcltk") 
Error : .onLoad failed in loadNamespace() for 'tcltk', details:
call: fun(libname, pkgname)
error: Tcl/Tk support is not available on this system
In addition: Warning message:
S3 methods ‘$.tclvar’, ‘$<-.tclvar’, ‘as.character.tclObj’, ‘as.character.tclVar’,  
‘as.double.tclObj’, ‘as.integer.tclObj’, ‘as.logical.tclObj’, ‘as.raw.tclObj’, 
‘print.tclObj’, ‘[[.tclArray’, ‘[[<-.tclArray’, ‘$.tclArray’, ‘$<-.tclArray’, 
‘names.tclArray’, ‘names<-.tclArray’, ‘length.tclArray’, ‘length<-.tclArray’, 
‘tclObj.tclVar’, ‘tclObj<-.tclVar’, ‘tclvalue.default’, ‘tclvalue.tclObj’,
‘tclvalue.tclVar’, ‘tclvalue<-.default’, ‘tclvalue<-.tclVar’, ‘close.tkProgressBar’ were declared in NAMESPACE but not found 
Error: package/namespace load failed for ‘tcltk’
> install.packages('tcltk')
Warning message:
package ‘tcltk’ is not available (for R version 2.15.1) 
lt;-.tclArray’, ‘names.tclArray’, ‘names<-.tclArray’, ‘length.tclArray’, ‘length<-.tclArray’, ‘tclObj.tclVar’, ‘tclObj<-.tclVar’, ‘tclvalue.default’, ‘tclvalue.tclObj’, ‘tclvalue.tclVar’, ‘tclvalue<-.default’, ‘tclvalue<-.tclVar’, ‘close.tkProgressBar’ were declared in NAMESPACE but not found Error: package/namespace load failed for ‘tcltk’ > install.packages('tcltk') Warning message: package ‘tcltk’ is not available (for R version 2.15.1)

Como puedo instalartcltk en mi R?

Editar
> capabilities()["tcltk"]
tcltk 
FALSE 

Compilé R-2.15.1 para instalarlo en debian6.04, pero ¿cómo puedo hacerlo ahora para ejecutar?tcltk?

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