Re: Introducing `cond-feature'

[Rob Browning]

address@hidden (Ludovic Courtès) writes:

> The main issue with such constructs is that they are evaluated at
> run-time instead of compile-time, unlike `cond-expand' which is
> explicitly compiler-friendly

Though I haven't thought about them carefully in this context yet, I
wondered to what extent (if any) the following might be relevant:

  - SRFI-7
      http://srfi.schemers.org/srfi-7/srfi-7.html

  - R6RS's library import/export "phases"
      http://www.r6rs.org/document/html/r6rs-Z-H-10.html#node_sec_6.2

  - SLIB's provide?, provided, feature-eval, etc.

  - Common Lisp's eval-when

  - Matthew Flatt's "Composable and Compilable Macros"
      http://www.cs.utah.edu/plt/publications/macromod.pdf

-- 
Rob Browning
rlb @defaultvalue.org and @debian.org; previously @cs.utexas.edu
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