Symbolic link in the path to current directory #69

$ raco pollen render test.html.pm
Rendering /run/user/1000/tmpdir/test/test.html.pm /home/kirrun/tmp/test/test.html.pm
render: test.html.pm
cpu time: 396 real time: 396 gc time: 119
render: test.html.pm
include-at/relative-to/reader: can't open include file (open-input-file: cannot open input file
  path: /home/kirrun/tmp/test/../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html
  system error: No such file or directory; errno=2)
  at: #<path:/home/kirrun/tmp/test/../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html>
  in: (include-at/relative-to/reader (file "../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html") (file "../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html") (file "../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html") (let ((xs #f) (...
  context...:
   /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/racket/private/more-scheme.rkt:162:2: select-handler/no-breaks
   /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/racket/include.rkt:13:0
   /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/pkgs/scribble-text-lib/scribble/text/syntax-utils.rkt:72:0
   /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/pkgs/scribble-text-lib/scribble/text/syntax-utils.rkt:121:2: loop
   /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/pkgs/scribble-text-lib/scribble/text/syntax-utils.rkt:148:0
   core225
   render-to-file
   unpack62
   loop
   (submod /home/kirrun/.racket/6.1.1/pkgs/pollen/command.rkt raco): [running body]
   /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/raco/raco.rkt: [running body]
   /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/raco/main.rkt: [running body]

The problem is that it is trying to include the fallback template using a relative path and that fails, because ~/tmp is a symlink:

$ pwd
/home/kirrun/tmp/test

$ readlink -f $(pwd)
/run/user/1000/tmpdir/test

Relative paths should be relative to whatever was used initially to produce those relative paths, and it seems to be relative to the completely dereferenced file name.

``` Console $ raco pollen render test.html.pm Rendering /run/user/1000/tmpdir/test/test.html.pm /home/kirrun/tmp/test/test.html.pm render: test.html.pm cpu time: 396 real time: 396 gc time: 119 render: test.html.pm include-at/relative-to/reader: can't open include file (open-input-file: cannot open input file path: /home/kirrun/tmp/test/../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html system error: No such file or directory; errno=2) at: #<path:/home/kirrun/tmp/test/../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html> in: (include-at/relative-to/reader (file "../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html") (file "../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html") (file "../../.racket/6.1.1/pkgs/pollen/server-extras/fallback.html") (let ((xs #f) (... context...: /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/racket/private/more-scheme.rkt:162:2: select-handler/no-breaks /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/racket/include.rkt:13:0 /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/pkgs/scribble-text-lib/scribble/text/syntax-utils.rkt:72:0 /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/pkgs/scribble-text-lib/scribble/text/syntax-utils.rkt:121:2: loop /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/pkgs/scribble-text-lib/scribble/text/syntax-utils.rkt:148:0 core225 render-to-file unpack62 loop (submod /home/kirrun/.racket/6.1.1/pkgs/pollen/command.rkt raco): [running body] /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/raco/raco.rkt: [running body] /nix/store/dzk1a00x1qv3pbzg3qway2bi7rzmfy5f-racket-6.1.1/share/racket/collects/raco/main.rkt: [running body] ``` The problem is that it is trying to include the fallback template using a relative path and that fails, because `~/tmp` is a symlink: ``` Console $ pwd /home/kirrun/tmp/test $ readlink -f $(pwd) /run/user/1000/tmpdir/test ``` Relative paths should be relative to whatever was used initially to produce those relative paths, and it seems to be relative to the completely dereferenced file name.

I do see a bug here, though maybe different than what you describe. raco pollen render is trying to render both the deferenced symlink path (/run/user/1000/tmpdir/test/test.html.pm) and the raw symlink path (/home/kirrun/tmp/test/test.html.pm). The first one actually works; the second one fails.

This was because of an off-by-one error in raco pollen render which I’ve now fixed.

I do see a bug here, though maybe different than what you describe. `raco pollen render` is trying to render both the deferenced symlink path (`/run/user/1000/tmpdir/test/test.html.pm`) and the raw symlink path (`/home/kirrun/tmp/test/test.html.pm`). The first one actually works; the second one fails. This was because of an off-by-one error in `raco pollen render` which [I’ve now fixed](https://github.com/mbutterick/pollen/commit/ee059bbc83f10e50248abc60547e8bdba2ffadc0).

Ah, I thought it did output the file name before and after dereferencing for informational purposes.

Now I see that the output is actually produced before it fails. Good to know that it’s fixed now.

Ah, I thought it did output the file name before and after dereferencing for informational purposes. Now I see that the output is actually produced before it fails. Good to know that it’s fixed now.

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Symbolic link in the path to current directory #69